copying vs copy

copying and copy both are nouns.

Word	Noun	Adjective	Verb	Adverb
copying	Yes	No	No	No
copy	Yes	No	Yes	No

copying (noun)	copy (noun)
an act of copying	a thing made to be similar or identical to another thing
	a reproduction of a written record (e.g. of a legal or school record)
	matter to be printed; exclusive of graphical materials
	material suitable for a journalistic account

copying (verb)	copy (verb)
	reproduce someone's behavior or looks
	make a replica of
	reproduce or make an exact copy of
	copy down as is