cognitive process vs cognitive operation

cognitive process and cognitive operation both are nouns.

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

As nouns, cognitive process and cognitive operation are synonyms defined as:

cognitive process and cognitive operation: (psychology) the performance of some composite cognitive activity; an operation that affects mental contents

Other synonyms of cognitive process include mental process, operation, process.

cognitive process (noun)	cognitive operation (noun)
(psychology) the performance of some composite cognitive activity; an operation that affects mental contents	(psychology) the performance of some composite cognitive activity; an operation that affects mental contents