fundraiser vs canvasser

fundraiser and canvasser both are nouns.

Word	Noun	Adjective	Verb	Adverb
fundraiser	Yes	No	No	No
canvasser	Yes	No	No	No

As nouns, canvasser is a hypernym of fundraiser; that is, canvasser is a word with a broader meaning than fundraiser:

Other hypernyms of fundraiser include solicitor.

fundraiser (noun)	canvasser (noun)
a social function that is held for the purpose of raising money	someone who conducts surveys of public opinion
someone who solicits financial contributions	someone who examines votes at an election
	a petitioner who solicits contributions or trade or votes
	a person who takes or counts votes