running away vs human activity

running away and human activity both are nouns.

Word	Noun	Adjective	Verb	Adverb
running away	Yes	No	No	No
human activity	Yes	No	No	No

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

running away: the act of leaving (without permission) the place you are expected to be
human activity: something that people do or cause to happen

Other hypernyms of running away include act, deed, human action.

running away (noun)	human activity (noun)
the act of leaving (without permission) the place you are expected to be	something that people do or cause to happen