house servant vs ayah

house servant and ayah both are nouns.

Word	Noun	Adjective	Verb	Adverb
house servant	Yes	No	No	No
ayah	Yes	No	No	No

As nouns, ayah is a hyponym of house servant; that is, ayah is a word with a more specific, narrower meaning than house servant:

house servant: a servant who is paid to perform menial tasks around the household
ayah: (in India) a native nursemaid who looks after children

Other hyponyms of house servant include home help, housekeeper, amah, housemaid, maid, maidservant, skivvy, slavey.

house servant (noun)	ayah (noun)
a servant who is paid to perform menial tasks around the household	(in India) a native nursemaid who looks after children