sexiness vs eros

sexiness and eros both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexiness	Yes	No	No	No
eros	Yes	No	No	No

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

Other hypernyms of sexiness include concupiscence, physical attraction, sexual desire.

sexiness (noun)	eros (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