proclamation vs human activity

proclamation and human activity both are nouns.

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

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

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

proclamation (noun)	human activity (noun)
the formal act of proclaiming; giving public notice	something that people do or cause to happen
a formal public statement