emulate vs emulator

emulate is not a noun while emulator is a noun.

Word	Noun	Adjective	Verb	Adverb
emulate	No	No	Yes	No
emulator	Yes	No	No	No

emulate (noun)	emulator (noun)
	someone who copies the words or behavior of another

emulate (verb)	emulator (verb)
compete with successfully; approach or reach equality with
strive to equal or match, especially by imitating
imitate the function of (another system), as by modifying the hardware or the software