good looks vs beauty

good looks and beauty both are nouns.

Word	Noun	Adjective	Verb	Adverb
good looks	Yes	No	No	No
beauty	Yes	No	No	No

As nouns, beauty is a hypernym of good looks; that is, beauty is a word with a broader meaning than good looks:

good looks: the quality of having regular well-defined features (especially of a man)
beauty: the qualities that give pleasure to the senses

good looks (noun)	beauty (noun)
the quality of having regular well-defined features (especially of a man)	the qualities that give pleasure to the senses
	an outstanding example of its kind
	a very attractive or seductive looking woman