information processing system vs slot

information processing system and slot both are nouns.

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

information processing system (noun)	slot (noun)
a machine for performing calculations automatically	a small slit (as for inserting a coin or depositing mail)
	a slot machine that is used for gambling
	(computer) a socket in a microcomputer that will accept a plug-in circuit board
	a position in a grammatical linguistic construction in which a variety of alternative units are interchangeable
	the trail of an animal (especially a deer)
	a position in a hierarchy or organization
	a time assigned on a schedule or agenda

information processing system (verb)	slot (verb)
	assign a time slot