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QUICK ANSWER
"What" is a form of "what", a pronoun which is often translated as "qué". "Verb" is a noun which is often translated as "el verbo". Learn more about the difference between "what" and "verb" below.
what()
A pronoun is a word that stands in for a noun (e.g., she).
An adjective is a word that describes a noun (e.g., the big dog).
An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
verb()
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).