In linguistics and grammar, a pronoun is a pro-form that substitutes for a noun (or noun phrase) with or without a determiner, such as you and they in English.
Common types of pronouns found in the world's languages are as follows:
Personal pronouns stand in place of the names of people or things:
Subjective pronouns are used when the person or thing is the subject of the sentence or clause. English example: I like to eat chips, but she does not.
Objective pronouns are used when the person or thing is the object of the sentence or clause. English example: John likes me but not her.
Prepositional pronouns come after a preposition. No distinct forms exist in English; for example: Anna and Maria looked at him.
Disjunctive pronouns are used in isolation or in certain other special grammatical contexts. No distinct forms exist in English; for example: Who does this belong to? Me.
Dummy pronouns are used when grammatical rules require a noun (or pronoun), but none is semantically required. English example: It is raining.
Weak pronouns.
Possessive pronouns are used to indicate possession or ownership.
Demonstrative pronouns distinguish the particular objects or people that are referred to from other possible candidates. English example: I'll take these.
Indefinite pronouns refer to general categories of people or things. English example: Anyone can do that.
Distributive pronouns are used to refer to members of a group separately rather than collectively. English example: To each his own.
Negative pronouns indicate the non-existence of people or things. English example: Nobody thinks that.
Relative pronouns refer back to people or things previously mentioned. English example: People who smoke should quit now
Interrogative pronouns ask which person or thing is meant. English example: Who did that?
