Pronoun

The Pronouns are used in place of the specific noun mentioned earlier in the sentence so that you do not have to keep saying/writing that particular noun.
Example:
Michael is a good boy. He gets up early in the morning. (Here, you don't need to mention 'Michael' again)
The coach selected several key points. He wanted the team to remember him. ('that' replaces 'coach'; 'them' replaces 'several key points').

The word or phrase which comes in place of pronoun is called antecedent of pronoun. In the previous example, the base noun 'coach' is preceded and the pronoun 'he' is the context because it refers to the original noun. The antecedent and pronoun must agree in terms of number and gender.

Types of Pronoun:-

# Subject Pronoun
# Object Pronouns
# Possessive Pronouns
# Reflexive Pronouns
# Deep Pronouns
# Relative Pronoun
# Demonstrative Pronouns
# Interrogative Pronouns

Subject Pronoun:
Subjective Pronouns act as the subject of the verb in the sentence. A subject pronoun normally replaces the subject/object (a noun) of the previous sentence.
Example:
    Raj can't attend the party. He has gone to his grandparents.
    Mahima is a good storyteller. She told the story of a ghost that scared everyone.
    Sangeeta made some cakes. They look delicious. (Here, the subject pronoun has replaced the object of the previous sentence)

Object Pronouns:
Object pronouns function as the object or indirect object in a sentence that replaces the preceding object. This form of pronoun is also used after prepositions.
Example:
    I will give you a gift on your birthday. I have a great idea for you. (after preposition)
    Tell him you'll take the job.
    I have a gift for your boss. Give it to your boss. (Here, 'this' acts as an object)

Possessive Pronouns:
Possessive pronouns replace the nouns of possessive adjectives: mine, ours, yours, his, hers, theirs. The possessive pronouns are mine, ours, yours, his, her, his, theirs. The pronoun 'who' also has a possessive form whose.
Example:
    I thought my bag was lost, but what Kesrick found was mine. (Here, 'mine' means 'my bag')
    His leave will start next week. We have tomorrow. (Here, 'our' means 'our holiday')
    Those four suitcases are ours.
    is it yours?
You have to either take his car or his. better than them. (Here, 'his' is possessive adjective and 'his' and 'their' are possessive pronouns which have replaced 'his car' and 'his car')

Reflexive Pronouns:
Reflexive pronouns redirect a sentence or a clause to the subject, which is also the direct object of that sentence. A reflexive pronoun occurs when the subject performs his or her own action. Here, 'self' is a reflexive pronoun.
Example:
Since she is her own boss, she elevated herself. (Here, 'self' is the direct object of the clause and the same person is the subject)
 He gave himself more time to get ready.
 Every night the computer restarts itself.

Intense Pronouns:
Intensive pronouns add emphasis/significance but do not function as objects in the sentence. They can appear right after the subject.
Example:
    I will do it myself. (Here, 'I' is not an object)
    I myself saw the missing boat in the harbor.
    We intend to do all the work ourselves.

Relative Pronoun:
Relative pronouns introduce relative clauses. They are used to clarify what is being talked about in a sentence. They describe something else about the subject or object.
Relative pronouns are:
Who, Whose, Whoever, Whom, Whomever, Whosever, Whichever, That, This, It
Example:
    The stolen car was the one they loved the most.
    A person who loves nature is a good person.
    Our school, which was established in 1995, is being renovated.
    Whatever party dress you buy me on Valentine's Day, I will accept it.
    Whoever you are behind this great initiative, I want to thank you.

Demonstrative Pronouns:

Demonstrative pronouns usually indicate the proximity or distance of the speaker, either literally or symbolically. This, this, that, and that are demonstrative pronouns. They also serve as demonstrative adjectives when they modify nouns. However, demonstrative pronouns do not modify anything but replace noun/noun phrases.
Sometimes neither, none and such are also used as demonstrative pronouns.
Example:
    It's a long way to go. (demonstrative pronoun)
    this is my car. (demonstrative pronoun)

Interrogative Pronouns:
Interrogative pronouns generate questions. What are they, who, who, who, and whose.
with reference to questions relating to who, whom and to whom any person or animal; What represents an idea, thing or event; And which can indicate either a person or a thing.
Example:
What was your dog's name?
which is your favorite movie?
Who works for you?
Who do you like in this contest?
There's a new bike on the lawn. Whose?