crusade vs crusader

crusade and crusader both are nouns.

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

crusade (noun)	crusader (noun)
a series of actions advancing a principle or tending toward a particular end	a disputant who advocates reform

crusade (verb)	crusader (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