stumping vs political campaign

stumping and political campaign both are nouns.

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

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

stumping: campaigning for something by making political speeches (stump speeches)
political campaign: the campaign of a candidate to be elected

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

stumping (noun)	political campaign (noun)
campaigning for something by making political speeches (stump speeches)	the campaign of a candidate to be elected
	a race between candidates for elective office