What is a pronoun?

A pronoun is indeed a word that replaces a noun. This function allows for clearer communication and avoids repetition in sentences. For example, instead of repeating a noun like "John" multiple times in a conversation, one can use "he" to refer to John after the first mention. By substituting nouns with pronouns, sentences become more fluid and easier to understand. This can apply to various types of pronouns, including personal pronouns (he, she, it), possessive pronouns (his, hers), and demonstrative pronouns (this, those), all of which serve the function of indicating people, objects, or ideas without restating their names. The ability of pronouns to streamline language while maintaining meaning is what makes them a critical part of speech.