cross-question vs interrogation

cross-question and interrogation both are nouns.

Word	Noun	Adjective	Verb	Adverb
cross-question	Yes	No	No	No
interrogation	Yes	No	No	No

As nouns, interrogation is a hypernym of cross-question; that is, interrogation is a word with a broader meaning than cross-question:

Other hypernyms of cross-question include interrogative, interrogative sentence, question.

cross-question (noun)	interrogation (noun)
a question asked in cross-examination	formal systematic questioning
	a sentence of inquiry that asks for a reply
	an instance of questioning
	a transmission that will trigger an answering transmission from a transponder