canvass vs survey

canvass and survey both are nouns.

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

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

canvass: consider in detail and subject to an analysis in order to discover essential features or meaning
survey: consider in a comprehensive way

As verbs, survey is a hypernym of canvass; that is, survey is a word with a broader meaning than canvass:

canvass (noun)	survey (noun)
a heavy, closely woven fabric	the act of looking or seeing or observing
the mat that forms the floor of the ring in which boxers or professional wrestlers compete	a detailed critical inspection
a tent made of canvas fabric	short descriptive summary (of events)
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

canvass (verb)	survey (verb)
consider in detail and subject to an analysis in order to discover essential features or meaning	consider in a comprehensive way
solicit votes from potential voters in an electoral campaign	plot a map of (land)
get the opinions (of people) by asking specific questions	make a survey of; for statistical purposes
	hold a review (of troops)
	look over carefully or inspect
	keep under surveillance