cautiousness vs carefulness

cautiousness and carefulness both are nouns.

Word	Noun	Adjective	Verb	Adverb
cautiousness	Yes	No	No	No
carefulness	Yes	No	No	No

As nouns, cautiousness and carefulness are synonyms defined as:

cautiousness and carefulness: the trait of being cautious; being attentive to possible danger

Other synonyms of cautiousness include caution.

cautiousness (noun)	carefulness (noun)
the trait of being cautious; being attentive to possible danger	the quality of being careful and painstaking
	the trait of being cautious; being attentive to possible danger