dressing sack vs jacket

dressing sack and jacket both are nouns.

Word	Noun	Adjective	Verb	Adverb
dressing sack	Yes	No	No	No
jacket	Yes	No	Yes	No

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

dressing sack (noun)	jacket (noun)
a woman's loose jacket; worn while dressing	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

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