This document provides information about possessive nouns and collective nouns. It outlines 5 rules for forming possessive nouns by adding 's or just an apostrophe depending on whether the noun is singular or plural. It then defines collective nouns as words used to describe groups of people, animals, or things that are considered a single entity even though made up of multiple parts. The document lists common collective nouns like herd, pack, swarm, and provides examples of their use.