partsong vs vocal

partsong and vocal both are nouns.

Word	Noun	Adjective	Verb	Adverb
partsong	Yes	No	No	No
vocal	Yes	Yes	No	No

As nouns, vocal is a hypernym of partsong; that is, vocal is a word with a broader meaning than partsong:

Other hypernyms of partsong include song.

partsong (noun)	vocal (noun)
a song with two or more voice parts	music intended to be performed by one or more singers, usually with instrumental accompaniment
	a short musical composition with words

partsong (adjective)	vocal (adjective)
	having or using the power to produce speech or sound
	relating to or designed for or using the singing voice
	given to expressing yourself freely or insistently
	full of the sound of voices