housemaid vs parlormaid

housemaid and parlormaid both are nouns.

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

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

housemaid: a female domestic
parlormaid: a maid in a private home whose duties are to care for the parlor and the table and to answer the door

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

housemaid (noun)	parlormaid (noun)
a female domestic	a maid in a private home whose duties are to care for the parlor and the table and to answer the door