content word, open-class word - a word to which an independent meaning can be assigned

substantive - a noun or a pronoun that is used in place of a noun

collective noun - a noun that is singular in form but refers to a group of people or things

mass noun - a noun that does not form plurals

count noun - a noun that forms plurals

proper name, proper noun - a noun that denotes a particular thing; usually capitalized

common noun - a noun that denotes any or all members of a class

major form class - any of the parts of speech of traditional grammar

declension - the inflection of nouns and pronouns and adjectives in Indo-European languages