common sense vs nous

common sense and nous both are nouns.

Word	Noun	Adjective	Verb	Adverb
common sense	Yes	No	No	No
nous	Yes	No	No	No

As nouns, nous is a hyponym of common sense; that is, nous is a word with a more specific, narrower meaning than common sense:

Other hyponyms of common sense include logic, road sense.

common sense (noun)	nous (noun)
sound practical judgment	that which is responsible for one's thoughts, feelings, and conscious brain functions; the seat of the faculty of reason
	common sense