interest vs fascinate

interest is a noun but fascinate is not a noun.

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

As verbs, fascinate is a hyponym of interest; that is, fascinate is a word with a more specific, narrower meaning than interest:

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

Other hyponyms of interest include absorb, engage, engross, occupy, grip, spellbind, transfix.

As verbs, fascinate is a hyponym of interest; that is, fascinate is a word with a more specific, narrower meaning than interest:

Other hyponyms of interest include intrigue.

interest (noun)	fascinate (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

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