wrapper vs brunch coat

wrapper and brunch coat both are nouns.

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

As nouns, brunch coat is a hyponym of wrapper; that is, brunch coat is a word with a more specific, narrower meaning than wrapper:

Other hyponyms of wrapper include camisole.

wrapper (noun)	brunch coat (noun)
cloak that is folded or wrapped around a person	a woman's short housecoat or wrapper
a loose dressing gown for women
the covering (usually paper or cellophane) in which something is wrapped