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Group vs Period - What's the difference?

group | period |

In chemistry terms the difference between group and period

is that group is a functional entity consisting of certain atoms whose presence provides a certain property to a molecule, such as the methyl group while period is a row in the periodic table of the elements.

In geology terms the difference between group and period

is that group is a collection of formations or rock strata while period is a subdivision of an era, typically lasting from tens to hundreds of millions of years, see Appendix: Geologic timescale.

In lang=en terms the difference between group and period

is that group is a number of eighth, sixteenth, etc., notes joined at the stems; sometimes rather indefinitely applied to any ornament made up of a few short notes while period is one of several similar sets of figures or terms usually marked by points or commas placed at regular intervals, as in numeration, in the extraction of roots, and in recurring decimals.

As nouns the difference between group and period

is that group is a number of things or persons being in some relation to one another while period is the length of time for a disease to run its course.

As verbs the difference between group and period

is that group is to put together to form a group while period is to come to a period; to conclude.

As an adjective period is

appropriate for a given historical era.

As an interjection period is

and nothing else; and nothing less; used for emphasis.

group

English

Alternative forms

* groupe (obsolete)

Noun

(en noun)
  • A number of things or persons being in some relation to one another.
  • * , chapter=5
    • , title= The Mirror and the Lamp , passage=Then everybody once more knelt, and soon the blessing was pronounced. The choir and the clergy trooped out slowly, […], down the nave to the western door. […] At a seemingly immense distance the surpliced group stopped to say the last prayer.}}
  • * {{quote-magazine, date=2013-07-19, author=(Peter Wilby)
    • , volume=189, issue=6, page=30, magazine=(The Guardian Weekly) , title= Finland spreads word on schools , passage=Imagine a country where children do nothing but play until they start compulsory schooling at age seven. Then, without exception, they attend comprehensives until the age of 16. Charging school fees is illegal, and so is sorting pupils into ability groups by streaming or setting.}}
  • (group theory) A set with an associative binary operation, under which there exists an identity element, and such that each element has an inverse.
  • (geometry, archaic) An effective divisor on a curve.
  • A (usually small) group of people who perform music together.
  • (astronomy) A small number (up to about fifty) of galaxies that are near each other.
  • (chemistry) A column in the periodic table of chemical elements.
  • (chemistry) A functional entity consisting of certain atoms whose presence provides a certain property to a molecule, such as the methyl group.
  • (sociology) A subset of a culture or of a society.
  • (military) An air force formation.
  • (geology) A collection of formations or rock strata.
  • (computing) A number of users with same rights with respect to accession, modification, and execution of files, computers and peripherals.
  • An element of an espresso machine from which hot water pours into the portafilter.
  • (music) A number of eighth, sixteenth, etc., notes joined at the stems; sometimes rather indefinitely applied to any ornament made up of a few short notes.
  • (sports) A set of teams playing each other in the same division, while at the same time not playing teams that belong to other sets in the division.
  • *

    • Synonyms

    * (number of things or persons being in some relation to each other) collection, set * (people who perform music together) band, ensemble * See also

    Hypernyms

    * (in group theory) monoid

    Derived terms

    * Abelian group, abelian group * encounter group * factor group * free group * fundamental group * general linear group * girl group * group homomorphism * group isomorphism * group leader * group representation * group theory * Lie group * Local Group * minority group * p -group * pop group * quotient group * simple group * subgroup

    Verb

    (en verb)
  • To put together to form a group.
  • To come together to form a group.

    • Synonyms

    * (put together to form a group) amass, categorise/categorize, classify, collect, collect up, gather, gather together, gather up

    External links

    * * 1000 English basic words

    period

    English

    Alternative forms

    *

    Adjective

    (-)
  • Appropriate for a given historical era.
  • * 2004 , Mark Singer, Somewhere in America , Houghton Mifflin, page 70:
    • As the guests arrived — there were about a hundred, a majority in period attire — I began to feel out of place in my beige summer suit, white shirt, and red necktie. Then I got over it. I certainly didn't suffer from Confederate-uniform envy.
  • Set in and designed to evoke a particular historical period, especially through the use of elaborate costumes and scenery.

    • Interjection

    (en interjection)
  • (chiefly, North America) And nothing else; and nothing less; used for emphasis.
    • When I say "eat your dinner," it means "eat your dinner," period !

    Synonyms

    * (and nothing else) full stop

    Noun

    (en noun)
  • (obsolete, medicine) The length of time for a disease to run its course.
  • An end or conclusion; the final point of a process etc.
  • * , II.3:
    • All comes to one period , whether man make an end of himselfe, or whether he endure it.
  • * Milton
    • So spake the archangel Michael; then paused, / As at the world's great period .
  • * Jeremy Taylor
    • evils which shall never end till eternity hath a period
  • * Shakespeare
    • This is the period of my ambition.
  • A period of time in history seen as a single coherent entity; an epoch, era.
  • * , chapter=7
    • , title= The Mirror and the Lamp , passage=With some of it on the south and more of it on the north of the great main thoroughfare that connects Aldgate and the East India Docks, St.?Bede's at this period of its history was perhaps the poorest and most miserable parish in the East End of London.}}
  • (rhetoric) A complete sentence, especially one expressing a single thought or making a balanced, rhythmic whole.
  • * Ben Jonson
    • Periods are beautiful when they are not too long.
  • * 1644 , (John Milton), Aeropagitica :
    • that such iron moulds as these shall have autority to knaw out the choicest periods of exquisitest books, and to commit such a treacherous fraud against the orphan remainders of worthiest men after death, the more sorrow will belong to that haples race of men, whose misfortune it is to have understanding.
  • The punctuation mark “. ” (indicating the ending of a sentence or marking an abbreviation).
  • A length of time.
  • * {{quote-news, year=2011, date=December 14, author=Steven Morris, work=Guardian
    • , title= Devon woman jailed for 168 days for killing kitten in microwave , passage=Philip Miles, defending, said: "This was a single instance, there was no allegation of continuing behaviour over a long period of time."}}
  • The length of time during which the same characteristics of a periodic phenomenon recur, such as the repetition of a wave or the rotation of a planet.
  • (obsolete) A specific moment during a given process; a point, a stage.
  • * 1720 , Alexander Pope, translating Homer, Iliad , Book IV (note 125):
    • The Death of Patroclus was the most eminent Period ; and consequently the most proper Time for such Games.
  • Female menstruation.
  • A section of an artist's, writer's (etc.) career distinguished by a given quality, preoccupation etc.
  • Each of the divisions into which a school day is split, allocated to a given subject or activity.
  • (chemistry) A row in the periodic table of the elements.
  • (geology) A subdivision of an era, typically lasting from tens to hundreds of millions of years, see .
  • (genetics) A Drosophila gene which gene product is involved in regulation of the circadian rhythm.
  • * {{quote-journal
    • , title= Antibodies to the period gene product of drosophila reveal diverse tissue distribution and rhythmic changes in the visual system , volume=1, issue=2, page=141, year=1988, date=1 April, journal=Neuron , passage=Polyclonal antibodies were prepared against the period gene product, which influences biological rhythms in D. melanogaster, by using small synthetic peptides from the per sequence as immunogens.}}
  • * 2009 {{cite web
    • , date=20 November 2009 citation , title=Gene Dmel\per, format=Gene Report (database record) , work=FlyBase, publisher=The FlyBase Consortium , language=en, accessdate=7 December, accessyear=2009}}
  • (music) Two phrases (an antecedent]] and a [[consequent phrase, consequent phrase).
  • (math) One of several similar sets of figures or terms usually marked by points or commas placed at regular intervals, as in numeration, in the extraction of roots, and in recurring decimals.

    • Derived terms

    * pseudoperiod, pseudoperiodic

    Synonyms

    * * See also

    Antonyms

    * (length of time of recurrence of a periodic phenomenon) frequency

    See also

    * (punctuation)

    Verb

    (en verb)
  • (obsolete) To come to a period; to conclude.
  • * Owen Felltham
    • For you may period upon this, that where there is the most pity for others, there is the greatest misery in the party pitied.
  • To put an end to.
    • (Shakespeare)

    Statistics

    *

    Anagrams

    * 1000 English basic words ---- ==Serbo-Croatian==

    Noun

  • (of time)

    • Declension

    {{sh-decl-noun , period, periodi , perioda, perioda , periodu, periodima , period, periode , periode, periodi , periodu, periodima , periodom, periodima }}

    References

    * ----