outside door vs room access

outside door and room access both are nouns.

Word	Noun	Adjective	Verb	Adverb
outside door	Yes	No	No	No
room access	Yes	No	No	No

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

outside door: a doorway that allows entrance to or exit from a building
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

Other hypernyms of outside door include door, doorway, threshold.

outside door (noun)	room access (noun)
a doorway that allows entrance to or exit from a building	the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close