classification

nouns

the act of distributing things into classes or categories of the same type
is derived from
is derived from
a group of people or things arranged by class or category
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is derived from
the basic cognitive process of arranging into classes or categories
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is derived from
restriction imposed by the government on documents or weapons that are available only to certain authorized people
is derived from
is a type of (narrower)
the act of keeping something within specified bounds (by force if necessary)
"the restriction of the infection to a focal area"