astasia vs disability

astasia and disability both are nouns.

Word	Noun	Adjective	Verb	Adverb
astasia	Yes	No	No	No
disability	Yes	No	No	No

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

astasia: inability to stand due to muscular incoordination
disability: the condition of being unable to perform as a consequence of physical or mental unfitness

Other hypernyms of astasia include disablement, handicap, impairment.

astasia (noun)	disability (noun)
inability to stand due to muscular incoordination	the condition of being unable to perform as a consequence of physical or mental unfitness