nous vs noesis

nous and noesis both are nouns.

Word	Noun	Adjective	Verb	Adverb
nous	Yes	No	No	No
noesis	Yes	No	No	No

As nouns, noesis is a hypernym of nous; that is, noesis is a word with a broader meaning than nous:

nous: that which is responsible for one's thoughts, feelings, and conscious brain functions; the seat of the faculty of reason
noesis: the psychological result of perception and learning and reasoning

Other hypernyms of nous include cognition, knowledge.

nous (noun)	noesis (noun)
that which is responsible for one's thoughts, feelings, and conscious brain functions; the seat of the faculty of reason	the psychological result of perception and learning and reasoning
common sense