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Ac vs Category - What's the difference?

ac | category |

As an adjective ac

is cruel, severe, fierce.

As a noun category is

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

ac

English

(wikipedia AC)

Alternative forms

* (air conditioning) * (alternating current) , ac * (army corps, atheletic club) * (anno Christi, ante Christum) * (ante cibum)

Initialism

(Initialism) (head)
  • absolute ceiling
  • account current
  • acre
  • (music) adult contemporary, a radio format
  • air conditioning; air conditioned
  • air corps
  • aircraftman
  • all clear, as in button on electronic calculator
  • (electricity) alternating current; often used to indicate an alternating potential rather than a current, as in 110V AC.
  • anno Christi, in the year of Christ.
  • ante Christum, before Christ.
  • (medical) ante cibum, before meals.
  • (religion) antichristian
  • area code
  • army corps
  • (legal) as charged, as in: guilty as charged, usually
  • athletic club
  • (Internet, slang) audible chuckle (rfex)
  • author's correction
  • automobile club
  • (US, military) Auxiliary Collier - a naval coal transport that travels with the fleet to provide coal for coal powered warships
  • (set theory) axiom of choice
  • (Australia) Companion of the Order of Australia.
  • aviation cadet
  • America's Cup (competition yacht sailing match racing regatta)
  • (label)
  • Synonyms

    * (anno Christi) AD (anno Domini) * (ante Christum) BC (before Christ)

    Antonyms

    * (alternating current) DC * (ante Christum) AD (anno Domini)

    Derived terms

    * (sense, America's Cup) ** IACC ** ** ** *

    Abbreviation

    (Abbreviation) (head)
  • Aceh, an autonomous province of Indonesia.
  • (geography) Acre, a state of Brazil.
  • Anagrams

    * ----

    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