chambermaid vs housemaid

chambermaid and housemaid both are nouns.

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

As nouns, housemaid is a hypernym of chambermaid; that is, housemaid 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)
housemaid: a female domestic

Other hypernyms of chambermaid include amah, maid, maidservant.

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