sexpot vs young woman

sexpot and young woman both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexpot	Yes	No	No	No
young woman	Yes	No	No	No

As nouns, young woman is a hypernym of sexpot; that is, young woman is a word with a broader meaning than sexpot:

Other hypernyms of sexpot include fille, girl, miss, missy, young lady.

sexpot (noun)	young woman (noun)
a young woman who is thought to have sex appeal	a young female