certitude vs overconfidence

certitude and overconfidence both are nouns.

Word	Noun	Adjective	Verb	Adverb
certitude	Yes	No	No	No
overconfidence	Yes	No	No	No

As nouns, certitude and overconfidence are synonyms defined as:

certitude and overconfidence: total certainty or greater certainty than circumstances warrant

Other synonyms of certitude include cocksureness.

certitude (noun)	overconfidence (noun)
total certainty or greater certainty than circumstances warrant	total certainty or greater certainty than circumstances warrant