unbelief vs cognitive content

unbelief and cognitive content both are nouns.

Word	Noun	Adjective	Verb	Adverb
unbelief	Yes	No	No	No
cognitive content	Yes	No	No	No

As nouns, cognitive content is a hypernym of unbelief; that is, cognitive content is a word with a broader meaning than unbelief:

unbelief: a rejection of belief
cognitive content: the sum or range of what has been perceived, discovered, or learned

Other hypernyms of unbelief include content, mental object.

unbelief (noun)	cognitive content (noun)
a rejection of belief	the sum or range of what has been perceived, discovered, or learned