silicon chip vs information processing system

silicon chip and information processing system both are nouns.

Word	Noun	Adjective	Verb	Adverb
silicon chip	Yes	No	No	No
information processing system	Yes	No	No	No

silicon chip (noun)	information processing system (noun)
electronic equipment consisting of a small crystal of a silicon semiconductor fabricated to carry out a number of electronic functions in an integrated circuit	a machine for performing calculations automatically