Yes, the word 'his' is a possessive pronoun and a possessive adjective.
The pronoun 'his' takes the place of a singular noun for a male (grandpa).
A possessive pronoun takes the place of a noun that belongs to someone or something.
Example: We visited grandpa at the lake. The cabin in the photo is his.
A possessive adjective is placed before a noun to describe that noun as belonging to someone or something.
Example: We visited grandpa at the lake. This is a photo of his cabin.
The possessive form of the noun grandpa is grandpa's.example: I'm going to stop by grandpa's house.
The singular possessive form of the word "grandfather" is "grandfather's."
The possessive form of the plural noun seniors is seniors'.Example: The seniors' schedule of activities is posted on-line.
The plural form of the singular noun senior is seniors.The plural possessive form is seniors'.example: The seniors' photos were featured in the yearbook.
The Cypriot word for grandpa is "pappous."
The possessive form of the noun grandpa is grandpa's.example: I'm going to stop by grandpa's house.
The possessive form of the word dictionary is dictionary's.
The singular possessive form is word's, for example the word's definition.
possessive form for the word holders: holders'
the possessive form of the word Cathie: Cathie's
possessive form of the word Cathi: Cathi's
possessive form of the word Congress: Congress'
possessive form of the word glass: glass'
The possessive form of the word "month" is "month's."
The possessive form is Lindbergh's.
The possessive form is weaver's.
The possessive form for the interrogative pronoun who is whose.