corbiestep vs stair

corbiestep and stair both are nouns.

Word	Noun	Adjective	Verb	Adverb
corbiestep	Yes	No	No	No
stair	Yes	No	No	No

As nouns, stair is a hypernym of corbiestep; that is, stair is a word with a broader meaning than corbiestep:

corbiestep: (architecture) a step on the top of a gable wall
stair: support consisting of a place to rest the foot while ascending or descending a stairway

Other hypernyms of corbiestep include step.

corbiestep (noun)	stair (noun)
(architecture) a step on the top of a gable wall	support consisting of a place to rest the foot while ascending or descending a stairway