brunch coat vs housecoat

brunch coat and housecoat both are nouns.

Word	Noun	Adjective	Verb	Adverb
brunch coat	Yes	No	No	No
housecoat	Yes	No	No	No

As nouns, housecoat is a hypernym of brunch coat; that is, housecoat is a word with a broader meaning than brunch coat:

Other hypernyms of brunch coat include neglige, negligee, peignoir, wrapper.

brunch coat (noun)	housecoat (noun)
a woman's short housecoat or wrapper	a loose dressing gown for women