His
In short
His is a third-person singular possessive pronoun used to show that something belongs to a male person or animal.
In plain words
You use this word when you want to talk about something owned by a man or a boy. It tells the listener who the owner is without using their name again.
A simple example
If a boy named Sam has a red bicycle, you would say, 'That is his bicycle'.
Why it matters
It helps people speak more naturally by avoiding repetitive names. It makes sentences flow better during conversation.
Easy to mix up
Do not confuse it with 'him', which is used as an object, or 'he', which is used as a subject.