campaigning vs electioneering

campaigning and electioneering both are nouns.

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

As nouns, campaigning and electioneering are synonyms defined as:

campaigning and electioneering: the campaign of a candidate to be elected

Other synonyms of campaigning include candidacy, candidature, political campaign.

campaigning (noun)	electioneering (noun)
the campaign of a candidate to be elected	the campaign of a candidate to be elected
	persuasion of voters in a political campaign