computing device vs data processor

computing device and data processor both are nouns.

Word	Noun	Adjective	Verb	Adverb
computing device	Yes	No	No	No
data processor	Yes	No	No	No

As nouns, computing device and data processor are synonyms defined as:

computing device and data processor: a machine for performing calculations automatically

Other synonyms of computing device include computer, computing machine, electronic computer, information processing system.

computing device (noun)	data processor (noun)
a machine for performing calculations automatically	a machine for performing calculations automatically