defeat vs ending

defeat and ending both are nouns.

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

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

Other hypernyms of defeat include conclusion, finish, failure.

defeat (noun)	ending (noun)
an unsuccessful ending to a struggle or contest	the act of ending something
the feeling that accompanies an experience of being thwarted in attaining your goals	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

defeat (verb)	ending (verb)
win a victory over
thwart the passage of