computing machine vs data processor

computing machine and data processor both are nouns.

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

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

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

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

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