outerwear vs robe

outerwear and robe both are nouns.

Word	Noun	Adjective	Verb	Adverb
outerwear	Yes	No	No	No
robe	Yes	No	Yes	No

As nouns, robe is a hyponym of outerwear; that is, robe is a word with a more specific, narrower meaning than outerwear:

outerwear: clothing for use outdoors
robe: outerwear consisting of a long flowing garment used for official or ceremonial occasions

Other hyponyms of outerwear include gown.

outerwear (noun)	robe (noun)
clothing for use outdoors	any loose flowing garment
	outerwear consisting of a long flowing garment used for official or ceremonial occasions

outerwear (verb)	robe (verb)
	clothe formally; especially in ecclesiastical robes
	cover as if with clothing