Is king is noun or pronoun?

The Word 'king' is a noun; a singular, common, concrete noun; a Word for a person.

A pronoun is a Word that takes the place of a noun in a sentence. The pronouns that take the place of the noun 'king' are he as the subject of a sentence or a clause, and him as the object of a verb or a preposition.

Examples:

The king enjoys receiving gifts. (noun)

He really likes gold. (pronoun)

Then we will find some gold for him. (pronoun)