cognitive content vs knowledge

cognitive content and knowledge both are nouns.

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

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

cognitive content: the sum or range of what has been perceived, discovered, or learned
knowledge: the psychological result of perception and learning and reasoning

Other hypernyms of cognitive content include cognition, noesis.

cognitive content (noun)	knowledge (noun)
the sum or range of what has been perceived, discovered, or learned	the psychological result of perception and learning and reasoning