cognitive process vs knowledge

cognitive process and knowledge both are nouns.

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

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

cognitive process: (psychology) the performance of some composite cognitive activity; an operation that affects mental contents
knowledge: the psychological result of perception and learning and reasoning

Other hypernyms of cognitive process include cognition, noesis.

cognitive process (noun)	knowledge (noun)
(psychology) the performance of some composite cognitive activity; an operation that affects mental contents	the psychological result of perception and learning and reasoning