…a word (other than a pronoun) used to identify any of a class of people, places, or things common noun, or to name a particular one of these proper noun…
…a noun denoting something that cannot be counted (e.g., a substance or quality), in English usually a noun that lacks a plural in ordinary usage and is not used with the indefinite article, e.g., luggage, china, happiness…
…a noun denoting someone or something that performs the action of a verb, typically ending in -er or -or, e.g., worker, accelerator…
…a noun denoting a class of objects or a concept as opposed to a particular individual…
…a noun that can form a plural and, in the singular, can be used with the indefinite article (e.g., books, a book)…
…a word or group of words that functions in a sentence as subject, object, or prepositional object…
…a name used for an individual person, place, or organization, spelled with initial capital letters, e.g., Larry, Mexico, and Boston Red Sox…
…a noun formed by inflection of a verb and partly sharing its constructions, such as smoking in smoking is forbidden…
…a noun that denotes a group of individuals (e.g., assembly, family, crew)…
