process printing vs printing

process printing and printing both are nouns.

Word	Noun	Adjective	Verb	Adverb
process printing	Yes	No	No	No
printing	Yes	No	No	No

As nouns, printing is a hypernym of process printing; that is, printing is a word with a broader meaning than process printing:

process printing: a method of printing colored reproductions from halftone plates
printing: reproduction by applying ink to paper as for publication

Other hypernyms of process printing include printing process.

process printing (noun)	printing (noun)
a method of printing colored reproductions from halftone plates	the business of producing printed material for sale or distribution
	reproduction by applying ink to paper as for publication
	text handwritten in the style of printed matter
	all the copies of a work printed at one time