credulousness vs naivete

credulousness and naivete both are nouns.

Word	Noun	Adjective	Verb	Adverb
credulousness	Yes	No	No	No
naivete	Yes	No	No	No

As nouns, naivete is a hypernym of credulousness; that is, naivete is a word with a broader meaning than credulousness:

credulousness: tendency to believe too readily and therefore to be easily deceived
naivete: lack of sophistication or worldliness

Other hypernyms of credulousness include naiveness, naivety.

credulousness (noun)	naivete (noun)
tendency to believe too readily and therefore to be easily deceived	lack of sophistication or worldliness