donkey jacket vs jacket

donkey jacket and jacket both are nouns.

Word	Noun	Adjective	Verb	Adverb
donkey jacket	Yes	No	No	No
jacket	Yes	No	Yes	No

As nouns, jacket is a hypernym of donkey jacket; that is, jacket is a word with a broader meaning than donkey jacket:

donkey jacket (noun)	jacket (noun)
a short thick jacket; often worn by workmen	a short coat
	an outer wrapping or casing
	(dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth
	the tough metal shell casing for certain kinds of ammunition
	the outer skin of a potato

donkey jacket (verb)	jacket (verb)
	put a jacket on
	provide with a thermally non-conducting cover