fille de chambre vs maid

fille de chambre and maid both are nouns.

Word	Noun	Adjective	Verb	Adverb
fille de chambre	Yes	No	No	No
maid	Yes	No	No	No

As nouns, maid is a hypernym of fille de chambre; that is, maid is a word with a broader meaning than fille de chambre:

fille de chambre: a maid who is employed to clean and care for bedrooms (now primarily in hotels)
maid: a female domestic

Other hypernyms of fille de chambre include amah, housemaid, maidservant.

fille de chambre (noun)	maid (noun)
a maid who is employed to clean and care for bedrooms (now primarily in hotels)	an unmarried girl (especially a virgin)
	a female domestic