robe vs robe-de-chambre

robe and robe-de-chambre both are nouns.

Word	Noun	Adjective	Verb	Adverb
robe	Yes	No	Yes	No
robe-de-chambre	Yes	No	No	No

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

Other hyponyms of robe include abaya, bathrobe, dressing gown, lounging robe, kimono.

robe (noun)	robe-de-chambre (noun)
any loose flowing garment	a robe worn before dressing or while lounging
outerwear consisting of a long flowing garment used for official or ceremonial occasions

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