Definition - A non-pronoun that is used to identify people, places, and things.
Note: Pronouns are not nouns because, by definition, they are words that are used in place of nouns — and that which is used in place of a noun is not a noun.

Example -
In the sentence The dog stared at the cat, the words dog and cat are nouns.

Etymology -
The word derives via Anglo-French from the Latin nomen, name or noun.

Oxford English Dictionary -
Its first citation is from 1398:
"Lux and lumen is li┼át in Englissche, butt in latine is difference bitwene þilke twey nownes."
(Trevisa Barth. De. P.R. viii. xxviii. (Bodl. MS.))

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