This document discusses singular, plural, and possessive nouns. It explains that singular nouns refer to one person, place or thing while plural nouns refer to more than one. To make nouns plural, usually an -s is added but sometimes -es or replacing a -y with -ies is used. Possessive nouns show ownership and are formed by adding an apostrophe and -s. Examples of singular, plural, and possessive nouns are provided to demonstrate their usage. The key rules for forming plurals and possessives are reviewed at the end.