printmaking vs etching

printmaking and etching both are nouns.

Word	Noun	Adjective	Verb	Adverb
printmaking	Yes	No	No	No
etching	Yes	No	No	No

As nouns, etching is a hyponym of printmaking; that is, etching is a word with a more specific, narrower meaning than printmaking:

printmaking: artistic design and manufacture of prints as woodcuts or silkscreens
etching: making engraved or etched plates and printing designs from them

Other hyponyms of printmaking include engraving, serigraphy, lithography.

printmaking (noun)	etching (noun)
artistic design and manufacture of prints as woodcuts or silkscreens	making engraved or etched plates and printing designs from them
	an etched plate made with the use of acid
	an impression made from an etched plate