Used to show ownership or relationship to a noun
Possessive Adjectives modify a noun by showing who owns or is related to it.
Function: Clarify who or what something belongs to.
Adjective: This is my car. (modifies "car")
Pronoun: This car is mine. (replaces noun)
Its = possessive adjective | It's = it is / it has
Example: It's raining, and the cat lost its way.
Incorrect: I met brother yesterday.
Correct: I met my brother yesterday.