sexiness vs physical attraction

sexiness and physical attraction both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexiness	Yes	No	No	No
physical attraction	Yes	No	No	No

As nouns, physical attraction is a hypernym of sexiness; that is, physical attraction is a word with a broader meaning than sexiness:

Other hypernyms of sexiness include concupiscence, eros, sexual desire.

sexiness (noun)	physical attraction (noun)
The state or quality of being sexy, of possessing the traits of sexual appeal.	a desire for sexual intimacy
the arousal of feelings of sexual desire