lunacy vs harlequinade

lunacy and harlequinade both are nouns.

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

As nouns, harlequinade is a hyponym of lunacy; that is, harlequinade is a word with a more specific, narrower meaning than lunacy:

Other hyponyms of lunacy include meshugaas, mishegaas, mishegoss, buffoonery, clowning, frivolity, japery, prank.

lunacy (noun)	harlequinade (noun)
foolish or senseless behavior	acting like a clown or buffoon
obsolete terms for legal insanity