noumenon vs cognitive content

noumenon and cognitive content both are nouns.

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

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

noumenon: the intellectual conception of a thing as it is in itself, not as it is known through perception
cognitive content: the sum or range of what has been perceived, discovered, or learned

Other hypernyms of noumenon include content, mental object.

noumenon (noun)	cognitive content (noun)
the intellectual conception of a thing as it is in itself, not as it is known through perception	the sum or range of what has been perceived, discovered, or learned