canvasser vs canvass

canvasser and canvass both are nouns.

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

canvasser (noun)	canvass (noun)
someone who conducts surveys of public opinion	a heavy, closely woven fabric
someone who examines votes at an election	the mat that forms the floor of the ring in which boxers or professional wrestlers compete
a petitioner who solicits contributions or trade or votes	a tent made of canvas fabric
a person who takes or counts votes	a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel
	an oil painting on canvas fabric
	an inquiry into public opinion conducted by interviewing a random sample of people
	the setting for a narrative or fictional or dramatic account

canvasser (verb)	canvass (verb)
	consider in detail and subject to an analysis in order to discover essential features or meaning
	solicit votes from potential voters in an electoral campaign
	get the opinions (of people) by asking specific questions