second banana vs subsidiary

second banana and subsidiary both are nouns.

Word	Noun	Adjective	Verb	Adverb
second banana	Yes	No	No	No
subsidiary	Yes	Yes	No	No

As nouns, subsidiary is a hypernym of second banana; that is, subsidiary is a word with a broader meaning than second banana:

second banana: someone who serves in a subordinate capacity or plays a secondary role
subsidiary: an assistant subject to the authority or control of another

Other hypernyms of second banana include foot soldier, subordinate, underling.

second banana (noun)	subsidiary (noun)
a performer who acts as stooge to a comedian	a company that is completely controlled by another company
someone who serves in a subordinate capacity or plays a secondary role	an assistant subject to the authority or control of another

second banana (adjective)	subsidiary (adjective)
	functioning in a supporting capacity