processor vs C.P.U.

processor and C.P.U. both are nouns.

Word	Noun	Adjective	Verb	Adverb
processor	Yes	No	No	No
C.P.U.	Yes	No	No	No

As nouns, processor and C.P.U. are synonyms defined as:

processor and C.P.U.: (computer science) the part of a computer (a microprocessor chip) that does most of the data processing

Other synonyms of processor include central processing unit, central processor, CPU, mainframe.

processor (noun)	C.P.U. (noun)
(computer science) the part of a computer (a microprocessor chip) that does most of the data processing	(computer science) the part of a computer (a microprocessor chip) that does most of the data processing
a business engaged in processing agricultural products and preparing them for market
someone who processes things (foods or photographs or applicants etc.)