robe vs outerwear

robe and outerwear both are nouns.

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

As nouns, outerwear is a hypernym of robe; that is, outerwear is a word with a broader meaning than robe:

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

Other hypernyms of robe include overclothes.

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

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