exterior door vs doorway

exterior door and doorway both are nouns.

Word	Noun	Adjective	Verb	Adverb
exterior door	Yes	No	No	No
doorway	Yes	No	No	No

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

exterior door: a doorway that allows entrance to or exit from a building
doorway: 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 exterior door include door, room access, threshold.

exterior door (noun)	doorway (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