etching vs etch

etching is a noun but etch is not a noun.

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

etching (noun)	etch (noun)
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

etching (verb)	etch (verb)
	selectively dissolve the surface of (a semiconductor or printed circuit) with a solvent, laser, or stream of electrons
	carve or cut a design or letters into
	make an etching of
	carve or cut into a block used for printing or print from such a block
	cause to stand out or be clearly defined or visible