1. Words and Phrases:
* Interrogative pronouns: Words like *who*, *what*, *which*, *whose*, *whom*, and *where* are used to ask questions.
* Interrogative adjectives: These are adjectives used to ask questions, like *which* in "Which book do you want?"
* Interrogative adverbs: These adverbs ask questions about time, place, manner, etc., like *when*, *where*, *how*, and *why*.
* Interrogative sentences: Sentences structured to ask a question, usually ending with a question mark.
2. Actions:
* Interrogative mode of communication: The act of asking questions. This can be used for understanding, clarifying information, or seeking knowledge.
* Interrogation: A formal process of questioning someone, often in a legal or investigative setting.
In essence, anything that is "interrogative" is related to the act of asking a question.