servant's entrance vs entree

servant's entrance and entree both are nouns.

Word	Noun	Adjective	Verb	Adverb
servant's entrance	Yes	No	No	No
entree	Yes	No	No	No

As nouns, entree is a hypernym of servant's entrance; that is, entree is a word with a broader meaning than servant's entrance:

servant's entrance: an entrance intended for the use of servants or for delivery of goods and removal of refuse
entree: something that provides access (to get in or get out)

Other hypernyms of servant's entrance include entrance, entranceway, entry, entryway.

servant's entrance (noun)	entree (noun)
an entrance intended for the use of servants or for delivery of goods and removal of refuse	an entrance, especially a theatrical entrance onto a stage or as if onto a stage
	something that provides access (to get in or get out)
	the right to enter
	the principal dish of a meal