caper vs romp

caper and romp both are nouns.

Word	Noun	Adjective	Verb	Adverb
caper	Yes	No	Yes	No
romp	Yes	No	Yes	No

As nouns, caper and romp are synonyms defined as:

caper and romp: gay or light-hearted recreational activity for diversion or amusement

Other synonyms of caper include frolic, gambol, play.

caper (noun)	romp (noun)
gay or light-hearted recreational activity for diversion or amusement	gay or light-hearted recreational activity for diversion or amusement
a crime (especially a robbery)	an easy victory
a ludicrous or grotesque act done for fun and amusement	a girl who behaves in a boyish manner
a playful leap or hop
pickled flower buds used as a pungent relish in various dishes and sauces
any of numerous plants of the genus Capparis