demolition vs ending

demolition and ending both are nouns.

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

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

Other hypernyms of demolition include conclusion, finish.

demolition (noun)	ending (noun)
the act of demolishing	the act of ending something
an event that completely destroys 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