fishy vs suspect

fishy is not a noun while suspect is a noun.

Word	Noun	Adjective	Verb	Adverb
fishy	No	Yes	No	No
suspect	Yes	Yes	Yes	No

As adjectives, fishy and suspect are synonyms defined as:

Other synonyms of fishy include funny, shady, suspicious.

fishy (noun)	suspect (noun)
	someone who is under suspicion
	a person or institution against whom an action is brought in a court of law; the person being sued or accused

fishy (adjective)	suspect (adjective)
of or relating to or resembling fish	not as expected
not as expected

fishy (verb)	suspect (verb)
	regard as untrustworthy; regard with suspicion; have no faith or confidence in
	imagine to be the case or true or probable
	hold in suspicion; believe to be guilty