EDP vs ADP

EDP and ADP both are nouns.

Word	Noun	Adjective	Verb	Adverb
EDP	Yes	No	No	No
ADP	Yes	No	No	No

As nouns, ADP is a hypernym of EDP; that is, ADP is a word with a broader meaning than EDP:

EDP: automatic data processing by electronic means without the use of tabulating cards or punched tapes
ADP: data processing by a computer

Other hypernyms of EDP include automatic data processing.

EDP (noun)	ADP (noun)
automatic data processing by electronic means without the use of tabulating cards or punched tapes	data processing by a computer
	an ester of adenosine that is converted to ATP for energy storage