prank vs dirty trick

prank and dirty trick both are nouns.

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

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

Other hyponyms of prank include practical joke.

prank (noun)	dirty trick (noun)
a ludicrous or grotesque act done for fun and amusement	an unkind or aggressive trick
acting like a clown or buffoon

prank (verb)	dirty trick (verb)
dress up showily
dress or decorate showily or gaudily