Pronoun

Pronoun is a word that is used instead of a noun, e.g. he, she, it, they, his, her, him its etc.

Example.
John is an intelligent student. He goes to school daily. He studies a lot. He is making preparation for examination. He will get high marks examination.
In the above paragraph pronoun “he” is used instead of noun “John”. If we do not use pronoun in above paragraph we will have to use the noun “John” again and again in each sentence. So, the purpose of pronoun is to avoid the repetition of a noun. 
Examples. He, she, it, they, you, I, we, who, him, her, them, me, us, whom, his, its, their, your, mine, our and whose, myself, himself, herself , yourself,  which, this, that these, those,  are the pronouns which are mostly used.
Pronoun can be divided into following groups.

• Personal Pronouns:  e.g. I, you, He, she, it, they, who, me, him, her, them, whom
• Possessive Pronouns: e.g. yours, mine, his, hers, ours, theirs,
• Reflexive Pronouns: e.g. myself, himself, herself, itself, yourself, ourselves, themselves
• Reciprocal Pronoun: e.g. each other, one another
• Relative Pronouns: e.g. who, whom, whose, which, that
• Demonstrative Pronoun: e.g. this, these, that, those

Types of Pronoun

There five types of pronoun
1. Personal Pronoun
2. Possessive Pronoun
3. Reflixive Pronoun
4. Relative Pronoun
5. Demonstrative Pronoun

Personal Pronouns.

Personal pronoun describes a particular person or thing or group.
Personal pronoun describes the person speaking (I, me, we, us), the person spoken to (you), or the person or thing spoken about (he, she, it, they, him, her, them).