This document defines and categorizes different types of pronouns in English. It explains that pronouns are used in place of nouns and identifies five main categories: personal pronouns, possessive pronouns, demonstrative pronouns, reflexive pronouns, and interrogative pronouns. For each category, it provides definitions and examples to illustrate how pronouns can refer to people or objects based on number, person, gender, and other attributes. The document aims to comprehensively cover the different types of pronouns and how they are used in the English language.