suspicion vs distrustfulness

suspicion and distrustfulness both are nouns.

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

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

Other hypernyms of suspicion include distrust, mistrust.

suspicion (noun)	distrustfulness (noun)
being of a suspicious nature	the trait of not trusting others
doubt about someone's honesty
an impression that something might be the case
the state of being suspected