ETYM Latin categoria, Greek, to accuse, affirm, predicate; cata down, against + agora assembly.
A general concept that marks divisions or coordinations in a conceptual scheme.
In philosophy, a fundamental concept applied to being that cannot be reduced to anything more elementary. Aristotle listed ten categories: substance, quantity, quality, relation, place, time, position, state, action, and passion. + prikaži više

In sociology, the main grouping of social stratification in industrial societies, based primarily on economic and occupational factors, but also referring to people's style of living or sense of group identity. Within the social sciences, class has been used both as a descriptive category and as the basis of theories about industrial society. Theories of class may see such social divisions either as a source of social stability (Emile Durkheim) or social conflict (Karl Marx). In the US, little acknowledgment is given to the notion of class. If asked, most Americans identify themselves as middle class, although social scientists use measurements of education level, income, and occupation to ascribe social strata. + prikaži više

ETYM Cf. French classification.
In biology, the arrangement of organisms into a hierarchy of groups on the basis of their similarities in biochemical, anatomical, or physiological characters. The basic grouping is a species, several of which may constitute a genus, which in turn are grouped into families, and so on up through orders, classes, phyla (in plants, sometimes called divisions), to kingdoms.
1. A group of people or things arranged by class or category; SYN. categorization.
2. Restriction imposed by the government on documents or weapons that are available only to certain authorized people.
3. The basic cognitive process of arranging into classes or categories; SYN. categorization, sorting. + prikaži više

Fine looking; smart

1. Arranged into classes.
2. Official classification of information or documents; withheld from general circulation.