suspicion vs doubt

suspicion and doubt both are nouns.

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

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

Other hypernyms of suspicion include doubtfulness, dubiety, dubiousness, incertitude, uncertainty.

suspicion (noun)	doubt (noun)
being of a suspicious nature	uncertainty about the truth or factuality or existence of something
doubt about someone's honesty	the state of being unsure of something
an impression that something might be the case
the state of being suspected

suspicion (verb)	doubt (verb)
	consider unlikely
	lack confidence in