hustings vs political campaign

hustings and political campaign both are nouns.

Word	Noun	Adjective	Verb	Adverb
hustings	Yes	No	No	No
political campaign	Yes	No	No	No

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

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

Other hypernyms of hustings include campaigning, candidacy, candidature, electioneering.

hustings (noun)	political campaign (noun)
the activities involved in political campaigning (especially speech making)	the campaign of a candidate to be elected
	a race between candidates for elective office