suspicion vs belief

suspicion and belief both are nouns.

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

As nouns, belief is a hypernym of suspicion; that is, belief is a word with a broader meaning than suspicion:

Other hypernyms of suspicion include feeling, impression, notion, opinion.

suspicion (noun)	belief (noun)
being of a suspicious nature	any cognitive content held as true
doubt about someone's honesty	a vague idea in which some confidence is placed
an impression that something might be the case
the state of being suspected