tenor voice vs tenor

tenor voice and tenor both are nouns.

Word	Noun	Adjective	Verb	Adverb
tenor voice	Yes	No	No	No
tenor	Yes	Yes	No	No

As nouns, tenor voice and tenor are synonyms defined as:

tenor voice (noun)	tenor (noun)
the adult male singing voice above baritone	the pitch range of the highest male voice
	the general meaning or substance of an utterance
	a settled or prevailing or habitual course of a person's life
	the adult male singing voice above baritone
	an adult male with a tenor voice

tenor voice (adjective)	tenor (adjective)
	of or close in range to the highest natural adult male voice
	(of a musical instrument) intermediate between alto and baritone or bass