service door vs entranceway

service door and entranceway both are nouns.

Word	Noun	Adjective	Verb	Adverb
service door	Yes	No	No	No
entranceway	Yes	No	No	No

As nouns, entranceway is a hypernym of service door; that is, entranceway is a word with a broader meaning than service door:

service door: an entrance intended for the use of servants or for delivery of goods and removal of refuse
entranceway: something that provides access (to get in or get out)

Other hypernyms of service door include entrance, entree, entry, entryway.

service door (noun)	entranceway (noun)
an entrance intended for the use of servants or for delivery of goods and removal of refuse	something that provides access (to get in or get out)