ADPS vs ADP system

ADPS and ADP system both are nouns.

Word	Noun	Adjective	Verb	Adverb
ADPS	Yes	No	No	No
ADP system	Yes	No	No	No

As nouns, ADPS and ADP system are synonyms defined as:

ADPS and ADP system: a system of one or more computers and associated software with common storage

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

ADPS (noun)	ADP 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