The term "interrogative" indicates a question word. It is used to describe words or phrases that are used to ask questions, such as "who," "what," "where," "when," "why," and "how." These words are essential in forming interrogative sentences and seeking information. In contrast, "inversion" refers to a change in word order for emphasis or stylistic purposes, "intonation" refers to the rise and fall of pitch in speech, and "infinitive" refers to the base form of a verb.