adjective
Definition: Relating to the grammatical case that typically indicates the subject of a verb in a sentence.
Example: In English, the subject of a sentence is usually in the nominative case.
noun
Definition: A term used in grammar to refer to a word or form that is in the nominative case, which typically indicates the subject of a sentence.
Example: In the sentence 'She runs fast', 'She' is in the nominative case.