chambermaid vs fille de chambre

chambermaid and fille de chambre both are nouns.

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

As nouns, chambermaid and fille de chambre are synonyms defined as:

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

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