harlequinade vs japery

harlequinade and japery both are nouns.

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

As nouns, harlequinade and japery are synonyms defined as:

Other synonyms of harlequinade include buffoonery, clowning, frivolity, prank.

harlequinade (noun)	japery (noun)
acting like a clown or buffoon	acting like a clown or buffoon