abolishment vs ending

abolishment and ending both are nouns.

Word	Noun	Adjective	Verb	Adverb
abolishment	Yes	No	No	No
ending	Yes	No	No	No

As nouns, ending is a hypernym of abolishment; that is, ending is a word with a broader meaning than abolishment:

abolishment: the act of abolishing a system or practice or institution (especially abolishing slavery)
ending: the act of ending something

Other hypernyms of abolishment include conclusion, termination.

abolishment (noun)	ending (noun)
the act of abolishing a system or practice or institution (especially abolishing slavery)	the act of ending something
	the end of a word (a suffix or inflectional ending or final morpheme)
	the last section of a communication
	event whose occurrence ends something
	the point in time at which something ends