plotter vs information processing system

plotter and information processing system both are nouns.

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

plotter (noun)	information processing system (noun)
an instrument (usually driven by a computer) for drawing graphs or pictures	a machine for performing calculations automatically
a member of a conspiracy
a planner who draws up a personal scheme of action
a clerk who marks data on a chart