Pronoun (noun)

1. A word that is used in place of a noun, noun phrase, or noun clause.
2. A word that refers to a person, place, thing, or idea that has been previously mentioned.

Origin:

From old french pronon, from latin pronomen "name used in place of a noun", from pro- "for" + nomen "name".

Examples:

1. Personal pronouns, such as I, you, he, she, it, we, and they, are used to refer to specific individuals.
2. Possessive pronouns, such as mine, yours, his, hers, its, ours, and theirs, indicate possession or ownership.
3. Relative pronouns, such as that, which, and who, introduce clauses that are related to the noun they refer to.
4. Interrogative pronouns, such as who, whom, whose, which, and what, are used to ask questions.
5. Demonstrative pronouns, such as this, that, these, and those, are used to point out specific persons or things.