incontinency vs evacuation

incontinency and evacuation both are nouns.

Word	Noun	Adjective	Verb	Adverb
incontinency	Yes	No	No	No
evacuation	Yes	No	No	No

As nouns, evacuation is a hypernym of incontinency; that is, evacuation is a word with a broader meaning than incontinency:

Other hypernyms of incontinency include elimination, excreting, excretion, voiding.

incontinency (noun)	evacuation (noun)
involuntary urination or defecation	the act of removing the contents of something
	the act of evacuating; leaving a place in an orderly fashion; especially for protection
	the bodily process of discharging waste matter