abasia vs disability of walking

abasia and disability of walking both are nouns.

Word	Noun	Adjective	Verb	Adverb
abasia	Yes	No	No	No
disability of walking	Yes	No	No	No

As nouns, disability of walking is a hypernym of abasia; that is, disability of walking is a word with a broader meaning than abasia:

abasia: inability to walk
disability of walking: a disability that interferes with or prevents walking

abasia (noun)	disability of walking (noun)
inability to walk	a disability that interferes with or prevents walking