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Category vs Carrier - What's the difference?

category | carrier |

As a noun category

is a group, often named or numbered, to which items are assigned based on similarity or defined criteria.

As a proper noun carrier is

a northern athabaskan language spoken in canada sometimes considered to be three separate languages; southern carrier, northern carrier and central carrier.

category

English

(wikipedia category)

Noun

(categories)
  • A group, often named or numbered, to which items are assigned based on similarity or defined criteria.
  • *
    • The traditional way of describing the similarities and differences between constituents is to say that they belong to categories'' of various types. Thus, words like ''boy'', ''girl'', ''man'', ''woman'', etc. are traditionally said to belong to the category''' of Nouns, whereas words like ''a'', ''the'', ''this'', and ''that'' are traditionally said to belong to the ' category of Determiners.
    This steep and dangerous climb belongs to the most difficult category .
    I wouldn't put this book in the same category as the author's first novel.
  • (mathematics) A collection of objects, together with a transitively closed collection of composable arrows between them, such that every object has an identity arrow, and such that arrow composition is associative.
    • One well-known category has sets as objects and functions as arrows.
    Just as a monoid consists of an underlying set with a binary operation "on top of it" which is closed, associative and with an identity, a category consists of an underlying digraph with an arrow composition operation "on top of it" which is transitively closed, associative, and with an identity at each object. In fact, a category's composition operation, when restricted to a single one of its objects, turns that object's set of arrows (which would all be loops) into a monoid.

    Synonyms

    * (group to which items are assigned) class, family, genus, group, kingdom, order, phylum, race, tribe, type * See also

    Derived terms

    * category mistake * category theory * conceptual category * perceptual category * subcategory * supercategory

    Related terms

    * categorical * categorise / categorize * categorial

    External links

    * *

    carrier

    English

    (English Carrier) (Carrier Pigeon) (Homing Pigeon)

    Noun

    (en noun)
  • A person or object that carries someone or something else.
    • aircraft carrier
    armored personnel carrier
  • * Francis Bacon
    • The air which is but a carrier of the sounds.
  • A carrier pigeon, a newspaperese term (misnomer) for a homing pigeon, racing pigeon, racing homer, homer.
  • An Old English carrier pigeon or Old English carrier (the "King of the Doos").
  • A person or company in the business of shipping freight.
  • * Jonathan Swift
    • The roads are crowded with carriers , laden with rich manufactures.
  • A person or animal that transmits a disease to others without itself contracting the disease.
  • A signal such as radio, sound, or light that is modulated to transmit information.
  • A mobile network operator; wireless carrier.
  • An inert material added to an active ingredient to aid in the application and/or the effectiveness of active ingredient.
  • A certified airline.
  • * 2013 Dec. 22, Jad Mouawad and Martha C. White, "[http://www.nytimes.com/2013/12/23/business/on-jammed-jets-sardines-turn-on-one-another.html?hp]," New York Times (retrieved 23 December 2013):
  • *:Southwest, the nation’s largest domestic carrier , is installing seats with less cushion and thinner materials — a svelte model known in the business as “slim-line.”
  • (engineering) That which drives or carries.
  • # A piece which communicates to an object in a lathe the motion of the faceplate; a lathe dog.
  • # A spool holder or bobbin holder in a braiding machine.
  • # A movable piece in magazine guns which transfers the cartridge to a position from which it can be thrust into the barrel.

    • Usage notes

    * The term carrier pigeon'' is often used, especially in newspaper and magazine articles, for a homing pigeon or racing pigeon that carries messages. Many pigeon fanciers (particularly homer men]] and homer women) consider this to be a misnomer because the term is outdated and originally referred to the ancestors of present-day [[Old English carrier, Old English carriers. These "carrier pigeons" were formerly used to carry messages before the modern homing pigeon was developed in the 1800s (initially in Belgium and Britain), but is today strictly an exhibition pigeon or show pigeon that has mostly lost its strong homing instinct. The "carrier pigeon" was also one of the breeds used to develop the modern homing pigeon and therefore does have some "carrier blood" in it.The Carrier, or certainly the Horseman, was the first breed used in England for message-bearing purposes. The name, “Carrier Pigeon,” is still used today erroneously by many writers, especially in newspapers and periodicals, to describe the true Racing Homer. The Carrier today has been developed into a show bird alone, its homing propensities having long since ceased to be developed. — Wendell M. Levi, ''The Pigeon, 1941 (Renewed 1968), 1946, 1957, and 1963; p57.

    Derived terms

    * aircraft carrier * armored personnel carrier, armoured personnel carrier * banner carrier * carrier bag * carrier set * Old English Carrier pigeon, Old English Carrier, English Carrier pigeon, English Carrier, Carrier pigeon, Carrier * carrier pigeon (a misnomer for the homing pigeon, racing pigeon, homer) * carrier wave * charge carrier * common carrier * flag carrier * people carrier

    References