mishegoss vs lunacy

mishegoss and lunacy both are nouns.

Word	Noun	Adjective	Verb	Adverb
mishegoss	Yes	No	No	No
lunacy	Yes	No	No	No

As nouns, lunacy is a hypernym of mishegoss; that is, lunacy is a word with a broader meaning than mishegoss:

Other hypernyms of mishegoss include craziness, folly, foolery, indulgence, tomfoolery.

mishegoss (noun)	lunacy (noun)
(Yiddish) craziness; senseless behavior or activity	foolish or senseless behavior
	obsolete terms for legal insanity