campaign vs crusade

campaign and crusade both are nouns.

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

As nouns, campaign and crusade are synonyms defined as:

campaign and crusade: a series of actions advancing a principle or tending toward a particular end

Other synonyms of campaign include cause, drive, effort, movement.

As verbs, crusade is a hyponym of campaign; that is, crusade is a word with a more specific, narrower meaning than campaign:

As verbs, campaign and crusade are synonyms defined as:

campaign and crusade: 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

Other synonyms of campaign include agitate, fight, press, push.

campaign (noun)	crusade (noun)
several related operations aimed at achieving a particular goal (usually within geographical and temporal constraints)	a series of actions advancing a principle or tending toward a particular end
an overland journey by hunters (especially in Africa)
a series of actions advancing a principle or tending toward a particular end
a race between candidates for elective office

campaign (verb)	crusade (verb)
go on a campaign; go off to war	go on a crusade; fight a holy war
run, stand, or compete for an office or a position	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
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