Something that answers what or whom refers to grammar. In grammar, the answer to what or whom is most often a noun. The answer to what or whom can also be a proper noun or a noun modified by an adjective or verb. 'What' always refers to an inanimate object like a car, toy, television, or house. 'Whom' always refers to a person or people. The difference between what and whom is usually shown by the noun that follows the question.