doorway vs outside door

doorway and outside door both are nouns.

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

As nouns, outside door is a hyponym of doorway; that is, outside door is a word with a more specific, narrower meaning than doorway:

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

Other hyponyms of doorway include exterior door.

doorway (noun)	outside door (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	a doorway that allows entrance to or exit from a building