memory vs information processing system

memory and information processing system both are nouns.

Word	Noun	Adjective	Verb	Adverb
memory	Yes	No	No	No
information processing system	Yes	No	No	No

memory (noun)	information processing system (noun)
an electronic memory device	a machine for performing calculations automatically
the power of retaining and recalling past experience
the cognitive processes whereby past experience is remembered
something that is remembered
the area of cognitive psychology that studies memory processes