tomfoolery vs caper

tomfoolery and caper both are nouns.

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

As nouns, caper is a hypernym of tomfoolery; that is, caper is a word with a broader meaning than tomfoolery:

tomfoolery: foolish or senseless behavior
caper: gay or light-hearted recreational activity for diversion or amusement

Other hypernyms of tomfoolery include frolic, gambol, play, romp.

tomfoolery (noun)	caper (noun)
foolish or senseless behavior	gay or light-hearted recreational activity for diversion or amusement
	a crime (especially a robbery)
	a ludicrous or grotesque act done for fun and amusement
	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

tomfoolery (verb)	caper (verb)
	jump about playfully