room access vs entranceway

room access and entranceway both are nouns.

Word	Noun	Adjective	Verb	Adverb
room access	Yes	No	No	No
entranceway	Yes	No	No	No

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

room access: the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close
entranceway: something that provides access (to get in or get out)

Other hypernyms of room access include entrance, entree, entry, entryway.

room access (noun)	entranceway (noun)
the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close	something that provides access (to get in or get out)