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Category vs Classified - What's the difference?

category | classified |

As nouns the difference between category and classified

is that category is a group, often named or numbered, to which items are assigned based on similarity or defined criteria while classified is (informal) a classified advertisement in a newspaper or magazine.

As a verb classified is

(classify).

As an adjective classified is

formally assigned by a government to one of several levels of sensitivity, usually (in english) top secret, secret, confidential, and, in some countries, restricted; thereby making disclosure to unauthorized persons illegal.

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

    * *

    classified

    English

    Etymology 1

    Verb

    (head)
  • (classify)
    • Make sure all the field observations are classified by species.

    Adjective

    (classified information) (en adjective)
  • Formally assigned by a government to one of several levels of sensitivity, usually (in English) top secret, secret, confidential, and, in some countries, restricted; thereby making disclosure to unauthorized persons illegal.
    • We do not discuss specific interrogation techniques because they are classified information.
  • Not meant to be disclosed by a person or organization.
    • I won't say who I'm going to the prom with; that's classified .

    Etymology 2

    (Classified advertising) From , by shortening.

    Noun

    (en noun)
  • (informal) A classified advertisement in a newspaper or magazine.
    • He ran a classified for the tools he wanted to sell.