handsomeness vs good looks

handsomeness and good looks both are nouns.

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

As nouns, handsomeness and good looks are synonyms defined as:

handsomeness and good looks: the quality of having regular well-defined features (especially of a man)

handsomeness (noun)	good looks (noun)
the quality of having regular well-defined features (especially of a man)	the quality of having regular well-defined features (especially of a man)