third degree vs interrogation

third degree and interrogation both are nouns.

Word	Noun	Adjective	Verb	Adverb
third degree	Yes	No	No	No
interrogation	Yes	No	No	No

As nouns, interrogation is a hypernym of third degree; that is, interrogation is a word with a broader meaning than third degree:

third degree: interrogation often accompanied by torture to extort information or a confession
interrogation: formal systematic questioning

Other hypernyms of third degree include examination, interrogatory.

third degree (noun)	interrogation (noun)
interrogation often accompanied by torture to extort information or a confession	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