hustings vs campaigning

hustings and campaigning both are nouns.

Word	Noun	Adjective	Verb	Adverb
hustings	Yes	No	No	No
campaigning	Yes	No	No	No

As nouns, campaigning is a hypernym of hustings; that is, campaigning is a word with a broader meaning than hustings:

hustings: the activities involved in political campaigning (especially speech making)
campaigning: the campaign of a candidate to be elected

Other hypernyms of hustings include candidacy, candidature, electioneering, political campaign.

hustings (noun)	campaigning (noun)
the activities involved in political campaigning (especially speech making)	the campaign of a candidate to be elected