This document defines and provides examples of different types of nouns, including common and proper nouns, countable and uncountable nouns, concrete and abstract nouns, collective nouns, possessive nouns, gerunds, attributive nouns, appositive nouns, and generic nouns. A noun is a word that represents a person, place, thing, or concept. Nouns can serve as subjects or objects in sentences. Examples are given to illustrate the different types of nouns.