misgiving vs suspicion

misgiving and suspicion both are nouns.

Word	Noun	Adjective	Verb	Adverb
misgiving	Yes	No	No	No
suspicion	Yes	No	No	No

As nouns, misgiving and suspicion are synonyms defined as:

Other synonyms of misgiving include distrust, mistrust.

misgiving (noun)	suspicion (noun)
doubt about someone's honesty	being of a suspicious nature
painful expectation	doubt about someone's honesty
uneasiness about the fitness of an action (particularly for reasons of ethics, morals or propriety)	an impression that something might be the case
	the state of being suspected