copy vs emulate

copy is a noun but emulate is not a noun.

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

As verbs, emulate is a hyponym of copy; that is, emulate is a word with a more specific, narrower meaning than copy:

Other hyponyms of copy include conform to, follow, mock, take off, mime, mimic, model, pattern, follow, take after.

copy (noun)	emulate (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

copy (verb)	emulate (verb)
reproduce someone's behavior or looks	compete with successfully; approach or reach equality with
make a replica of	strive to equal or match, especially by imitating
reproduce or make an exact copy of	imitate the function of (another system), as by modifying the hardware or the software
copy down as is