fille de chambre vs housemaid

fille de chambre and housemaid both are nouns.

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

As nouns, housemaid is a hypernym of fille de chambre; that is, housemaid 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)
housemaid: a female domestic

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

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