leveling vs tearing down

leveling and tearing down both are nouns.

Word	Noun	Adjective	Verb	Adverb
leveling	Yes	No	No	No
tearing down	Yes	No	No	No

As nouns, leveling and tearing down are synonyms defined as:

Other synonyms of leveling include demolishing, razing.

leveling (noun)	tearing down (noun)
the act of making equal or uniform	complete destruction of a building
complete destruction of a building
changing the ground level to a smooth horizontal or gently sloping surface