the mind > language > linguistics > study of grammar > a part of speech > noun > [noun] > conversion into (3)
The use of another part of speech as a noun; (also) indication of nouns through non-verbal communication.
The action or process of converting an adjective (verb, etc.) into a noun (substantive).
The action or process of converting a word or phrase into a noun. Also: a noun or nominal formed in this way.