Eton jacket vs jacket

Eton jacket and jacket both are nouns.

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

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

Eton jacket (noun)	jacket (noun)
a jacket hanging to the waist and cut square at the bottom	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

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