Is the word what a pronoun or verb?

The Word 'what' is a pronoun, an adjective, an adverb, and an interjection.

The pronoun 'what' is an interrogative pronoun and a relative pronoun.

An interrogative pronoun introduces a question.

Example: What is your favorite movie?

A relative pronoun introduces a relative clause, a group of Words that includes a subject and a verb giving information about the antecedent but an incomplete sentence on its own.

Example: He gets what he wants by saving his money.

An adjective is a Word used to describe a noun.

Example: I've spent what money I had.

As an adverb, the Word 'what' is used to express how much or how.

Example: What can go wrong?

As an interjection, the Word 'what' is used to express surprise.

Example: What! The tickets are sold out?