faculty vs mental faculty

faculty and mental faculty both are nouns.

Word	Noun	Adjective	Verb	Adverb
faculty	Yes	No	No	No
mental faculty	Yes	No	No	No

As nouns, faculty and mental faculty are synonyms defined as:

faculty and mental faculty: one of the inherent cognitive or perceptual powers of the mind

Other synonyms of faculty include module.

faculty (noun)	mental faculty (noun)
one of the inherent cognitive or perceptual powers of the mind	one of the inherent cognitive or perceptual powers of the mind
the body of teachers and administrators at a school