mock vs simulate

mock is a noun but simulate is not a noun.

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

As verbs, simulate is a hypernym of mock; that is, simulate is a word with a broader meaning than mock:

Other hypernyms of mock include copy, imitate.

mock (noun)	simulate (noun)
the act of mocking or ridiculing

mock (adjective)	simulate (adjective)
constituting a copy or imitation of something

mock (verb)	simulate (verb)
treat with contempt	make a pretence of
imitate with mockery and derision	create a representation or simulation of
	reproduce someone's behavior or looks