caper vs dirty trick

caper and dirty trick both are nouns.

Word	Noun	Adjective	Verb	Adverb
caper	Yes	No	Yes	No
dirty trick	Yes	No	No	No

As nouns, dirty trick is a hyponym of caper; that is, dirty trick is a word with a more specific, narrower meaning than caper:

Other hyponyms of caper include practical joke.

caper (noun)	dirty trick (noun)
gay or light-hearted recreational activity for diversion or amusement	an unkind or aggressive trick
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

caper (verb)	dirty trick (verb)
jump about playfully