simulator vs simulate

simulator is a noun but simulate is not a noun.

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

simulator (noun)	simulate (noun)
a machine that simulates an environment for the purpose of training or research

simulator (verb)	simulate (verb)
	make a pretence of
	create a representation or simulation of
	reproduce someone's behavior or looks