Pronoun types are grammatical categories of pronouns classified according to their semantic, syntactic, and referential functions within a language. Common types include personal, possessive, reflexive, reciprocal, demonstrative, interrogative, relative, and indefinite pronouns, although their classification and boundaries vary across languages and grammatical frameworks ^[1][2]. Personal pronouns typically encode distinctions such as person, number, gender, and case, whereas demonstrative pronouns identify referents through spatial or discourse-related contrasts. Interrogative and relative pronouns participate in question formation and clause linkage, respectively, while indefinite pronouns refer to entities without specifying their exact identity ^[1][2][3]. These categories describe the grammatical distribution and referential behavior of pronominal expressions.