automatic data processing system vs computer system

automatic data processing system and computer system both are nouns.

Word	Noun	Adjective	Verb	Adverb
automatic data processing system	Yes	No	No	No
computer system	Yes	No	No	No

As nouns, automatic data processing system and computer system are synonyms defined as:

automatic data processing system and computer system: a system of one or more computers and associated software with common storage

Other synonyms of automatic data processing system include ADP system, ADPS, computing system.

automatic data processing system (noun)	computer system (noun)
a system of one or more computers and associated software with common storage	a system of one or more computers and associated software with common storage