opine vs suspect

opine is not a noun while suspect is a noun.

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

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

opine (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

opine (adjective)	suspect (adjective)
	not as expected

opine (verb)	suspect (verb)
expect, believe, or suppose	regard as untrustworthy; regard with suspicion; have no faith or confidence in
express one's opinion openly and without fear or hesitation	imagine to be the case or true or probable
	hold in suspicion; believe to be guilty