victory vs ending

victory and ending both are nouns.

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

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

Other hypernyms of victory include conclusion, finish, success.

victory (noun)	ending (noun)
a successful ending of a struggle or contest	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