demolishing vs devastation

demolishing and devastation both are nouns.

Word	Noun	Adjective	Verb	Adverb
demolishing	Yes	No	No	No
devastation	Yes	No	No	No

As nouns, devastation is a hypernym of demolishing; that is, devastation is a word with a broader meaning than demolishing:

demolishing: complete destruction of a building
devastation: the termination of something by causing so much damage to it that it cannot be repaired or no longer exists

Other hypernyms of demolishing include destruction.

demolishing (noun)	devastation (noun)
complete destruction of a building	the termination of something by causing so much damage to it that it cannot be repaired or no longer exists
	plundering with excessive damage and destruction
	an event that results in total destruction
	the feeling of being confounded or overwhelmed
	the state of being decayed or destroyed