computer vs central processor

computer and central processor both are nouns.

Word	Noun	Adjective	Verb	Adverb
computer	Yes	No	No	No
central processor	Yes	No	No	No

computer (noun)	central processor (noun)
a machine for performing calculations automatically	(computer science) the part of a computer (a microprocessor chip) that does most of the data processing
an expert at calculation (or at operating calculating machines)