leaving vs human action

leaving and human action both are nouns.

Word	Noun	Adjective	Verb	Adverb
leaving	Yes	No	No	No
human action	Yes	No	No	No

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

Other hypernyms of leaving include act, deed, human activity.

leaving (noun)	human action (noun)
the act of departing	something that people do or cause to happen