fascinate vs interest

fascinate is not a noun while interest is a noun.

Word	Noun	Adjective	Verb	Adverb
fascinate	No	No	Yes	No
interest	Yes	No	Yes	No

As verbs, interest is a hypernym of fascinate; that is, interest is a word with a broader meaning than fascinate:

fascinate: to render motionless, as with a fixed stare or by arousing terror or awe
interest: excite the curiosity of; engage the interest of

As verbs, interest is a hypernym of fascinate; that is, interest is a word with a broader meaning than fascinate:

Other hypernyms of fascinate include matter to.

fascinate (noun)	interest (noun)
	a diversion that occupies one's time and thoughts (usually pleasantly)
	a reason for wanting something done
	the power of attracting or holding one's attention (because it is unusual or exciting etc.)
	a sense of concern with and curiosity about someone or something
	(usually plural) a social group whose members control some field of activity and who have common aims
	a fixed charge for borrowing money; usually a percentage of the amount borrowed
	(law) a right or legal share of something; a financial involvement with something

fascinate (verb)	interest (verb)
to render motionless, as with a fixed stare or by arousing terror or awe	excite the curiosity of; engage the interest of
attract; cause to be enamored	be of importance or consequence
cause to be interested or curious	be on the mind of