housemaid vs house servant

housemaid and house servant both are nouns.

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

As nouns, house servant is a hypernym of housemaid; that is, house servant is a word with a broader meaning than housemaid:

housemaid: a female domestic
house servant: a servant who is paid to perform menial tasks around the household

Other hypernyms of housemaid include domestic, domestic help.

housemaid (noun)	house servant (noun)
a female domestic	a servant who is paid to perform menial tasks around the household