chambermaid vs maid

chambermaid and maid both are nouns.

Word	Noun	Adjective	Verb	Adverb
chambermaid	Yes	No	No	No
maid	Yes	No	No	No

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

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

Other hypernyms of chambermaid include amah, housemaid, maidservant.

chambermaid (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