This document defines different types of nouns and provides examples of each. It discusses common nouns, proper nouns, collective nouns, material nouns, countable nouns, and uncountable nouns. For countable nouns, it explains the rules for forming singular and plural versions. Uncountable nouns are defined as nouns that cannot be counted and an example sentence is given using the uncountable noun "sugar". In under 3 sentences, the document categorizes and defines different types of nouns.