house servant vs maid

house servant and maid both are nouns.

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

As nouns, maid is a hyponym of house servant; that is, maid 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
maid: a female domestic

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

house servant (noun)	maid (noun)
a servant who is paid to perform menial tasks around the household	an unmarried girl (especially a virgin)
	a female domestic