robe vs academic robe

robe and academic robe both are nouns.

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

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

robe: outerwear consisting of a long flowing garment used for official or ceremonial occasions
academic robe: a gown worn by academics or judges

Other hyponyms of robe include academic gown, judge's robe, vestment.

robe (noun)	academic robe (noun)
any loose flowing garment	a gown worn by academics or judges
outerwear consisting of a long flowing garment used for official or ceremonial occasions

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