simulate vs copy

simulate is not a noun while copy is a noun.

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

As verbs, simulate and copy are synonyms defined as:

Other synonyms of simulate include imitate.

simulate (noun)	copy (noun)
	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

simulate (verb)	copy (verb)
make a pretence of	reproduce someone's behavior or looks
create a representation or simulation of	make a replica of
reproduce someone's behavior or looks	reproduce or make an exact copy of
	copy down as is