vocal vs words

vocal and words both are nouns.

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

vocal (noun)	words (noun)
music intended to be performed by one or more singers, usually with instrumental accompaniment	words making up the dialogue of a play
a short musical composition with words	an angry dispute
	the text of a popular song or musical-comedy number
	the words that are spoken
	language that is spoken or written

vocal (adjective)	words (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