cymbal vs percussive instrument

cymbal and percussive instrument both are nouns.

Word	Noun	Adjective	Verb	Adverb
cymbal	Yes	No	No	No
percussive instrument	Yes	No	No	No

As nouns, percussive instrument is a hypernym of cymbal; that is, percussive instrument is a word with a broader meaning than cymbal:

cymbal: a percussion instrument consisting of a concave brass disk; makes a loud crashing sound when hit with a drumstick or when two are struck together
percussive instrument: a musical instrument in which the sound is produced by one object striking another

Other hypernyms of cymbal include percussion instrument.

cymbal (noun)	percussive instrument (noun)
a percussion instrument consisting of a concave brass disk; makes a loud crashing sound when hit with a drumstick or when two are struck together	a musical instrument in which the sound is produced by one object striking another