words vs vocal

words and vocal both are nouns.

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

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

words (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