lingerie vs night-robe

lingerie and night-robe both are nouns.

Word	Noun	Adjective	Verb	Adverb
lingerie	Yes	No	No	No
night-robe	Yes	No	No	No

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

lingerie: women's underwear and nightclothes
night-robe: lingerie consisting of a loose dress designed to be worn in bed by women

Other hyponyms of lingerie include gown, nightdress, nightgown, nightie, undies.

lingerie (noun)	night-robe (noun)
women's underwear and nightclothes	lingerie consisting of a loose dress designed to be worn in bed by women