fascination vs attractiveness

fascination and attractiveness both are nouns.

Word	Noun	Adjective	Verb	Adverb
fascination	Yes	No	No	No
attractiveness	Yes	No	No	No

As nouns, attractiveness is a hypernym of fascination; that is, attractiveness is a word with a broader meaning than fascination:

fascination: the capacity to attract intense interest
attractiveness: the quality of arousing interest; being attractive or something that attracts

Other hypernyms of fascination include attraction.

fascination (noun)	attractiveness (noun)
the capacity to attract intense interest	sexual allure
a feeling of great liking for something wonderful and unusual	the quality of arousing interest; being attractive or something that attracts
the state of being intensely interested (as by awe or terror)