amah vs chambermaid

amah and chambermaid both are nouns.

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

As nouns, chambermaid is a hyponym of amah; that is, chambermaid is a word with a more specific, narrower meaning than amah:

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

Other hyponyms of amah include fille de chambre, handmaid, handmaiden, lady's maid, parlormaid, parlourmaid.

amah (noun)	chambermaid (noun)
a female domestic	a maid who is employed to clean and care for bedrooms (now primarily in hotels)
a woman hired to suckle a child of someone else