leveling vs human activity

leveling and human activity both are nouns.

Word	Noun	Adjective	Verb	Adverb
leveling	Yes	No	No	No
human activity	Yes	No	No	No

As nouns, human activity is a hypernym of leveling; that is, human activity is a word with a broader meaning than leveling:

Other hypernyms of leveling include act, deed, human action.

leveling (noun)	human activity (noun)
the act of making equal or uniform	something that people do or cause to happen
complete destruction of a building
changing the ground level to a smooth horizontal or gently sloping surface