campaigning vs crusade

campaigning and crusade both are nouns.

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

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

campaigning: the campaign of a candidate to be elected
crusade: a series of actions advancing a principle or tending toward a particular end

Other hypernyms of campaigning include campaign, cause, drive, effort, movement.

campaigning (noun)	crusade (noun)
the campaign of a candidate to be elected	a series of actions advancing a principle or tending toward a particular end

campaigning (verb)	crusade (verb)
	go on a crusade; fight a holy war
	exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person; be an advocate for