This document defines and provides examples of different types of nouns: Proper nouns are names given to specific people, places, things, or animals and are capitalized. Common nouns are general names that can apply to many people or things. Collective nouns refer to groups. Countable nouns can be counted and have singular and plural forms, while uncountable nouns cannot be counted and do not have plural forms. Abstract nouns refer to qualities, emotions, states, or actions.