The difference between Category and Class

When used as nouns, category means a group, often named or numbered, to which items are assigned based on similarity or defined criteria, whereas class means a group, collection, category or set sharing characteristics or attributes.


Class is also verb with the meaning: to assign to a class.

Class is also adjective with the meaning: great.

check bellow for the other definitions of Category and Class

  1. Category as a noun:

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

    Examples:

    "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."

  2. Category as a noun (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.

    Examples:

    "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."

  1. Class as a noun (countable):

    A group, collection, category or set sharing characteristics or attributes.

    Examples:

    "The new Ford Fiesta is set to be best in the 'small family' class."

    "That is one class-A heifer you got there, sonny."

    "Often used to imply membership of a large class."

    "This word has a whole class of metaphoric extensions."

  2. Class as a noun (sociology, countable):

    A social grouping, based on job, wealth, etc. In Britain, society is commonly split into three main classes; upper class, middle class and working class.

  3. Class as a noun (uncountable):

    The division of society into classes.

    Examples:

    "Jane Austen's works deal with class in 18th-century England."

  4. Class as a noun (uncountable):

    Admirable behavior; elegance.

    Examples:

    "Apologizing for losing your temper, even though you were badly provoked, showed real class."

  5. Class as a noun (education, countable, and, uncountable):

    A group of students in a regularly scheduled meeting with a teacher.

    Examples:

    "The class was noisy, but the teacher was able to get their attention with a story."

  6. Class as a noun:

    A series of classes covering a single subject.

    Examples:

    "I took the cooking class for enjoyment, but I also learned a lot."

  7. Class as a noun (countable):

    A group of students who commenced or completed their education during a particular year. A school class.

    Examples:

    "The class of 1982 was particularly noteworthy."

  8. Class as a noun (countable):

    A category of seats in an airplane, train or other means of mass transportation.

    Examples:

    "I used to fly business class, but now my company can only afford economy."

  9. Class as a noun (taxonomy, countable):

    A rank in the classification of organisms, below phylum and above order; a taxon of that rank.

    Examples:

    "Magnolias belong to the class Magnoliopsida."

  10. Class as a noun:

    Best of its kind.

    Examples:

    "It is the class of Italian bottled waters."

  11. Class as a noun (set theory):

    A collection of sets definable by a shared property.

    Examples:

    "The class of all sets is not a set."

    "Every set is a class, but classes are not generally sets. A class that is not a set is called a proper class."

  12. Class as a noun (military):

    A group of people subject to be conscripted in the same military draft, or more narrowly those persons actually conscripted in a particular draft.

  13. Class as a noun (object-oriented, countable):

    A set of objects having the same behavior (but typically differing in state), or a template defining such a set.

    Examples:

    "an abstract base class'"

  14. Class as a noun:

    One of the sections into which a Methodist church or congregation is divided, supervised by a class leader.

  1. Class as a verb (transitive):

    To assign to a class; to classify.

    Examples:

    "I would class this with most of the other mediocre works of the period."

  2. Class as a verb (intransitive):

    To be grouped or classed.

  3. Class as a verb (transitive):

    To divide into classes, as students; to form into, or place in, a class or classes.

  1. Class as an adjective (Irish, British, slang):

    great; fabulous