corbie gable vs gable wall

corbie gable and gable wall both are nouns.

Word	Noun	Adjective	Verb	Adverb
corbie gable	Yes	No	No	No
gable wall	Yes	No	No	No

As nouns, gable wall is a hypernym of corbie gable; that is, gable wall is a word with a broader meaning than corbie gable:

corbie gable: (architecture) a gable having corbie-steps or corbel steps
gable wall: the vertical triangular wall between the sloping ends of gable roof

Other hypernyms of corbie gable include gable, gable end.

corbie gable (noun)	gable wall (noun)
(architecture) a gable having corbie-steps or corbel steps	the vertical triangular wall between the sloping ends of gable roof