information processing system vs store

information processing system and store both are nouns.

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

information processing system (noun)	store (noun)
a machine for performing calculations automatically	a mercantile establishment for the retail sale of goods or services
	a depository for goods
	an electronic memory device
	a supply of something available for future use

information processing system (verb)	store (verb)
	keep or lay aside for future use
	find a place for and put away for storage