diagnose vs canvass

diagnose is not a noun while canvass is a noun.

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

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

diagnose: determine or distinguish the nature of a problem or an illness through a diagnostic analysis
canvass: consider in detail and subject to an analysis in order to discover essential features or meaning

Other hypernyms of diagnose include analyse, analyze, examine, study.

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

diagnose: subject to a medical analysis
canvass: consider in detail and subject to an analysis in order to discover essential features or meaning

Other hypernyms of diagnose include analyse, analyze, examine, study.

diagnose (noun)	canvass (noun)
	a heavy, closely woven fabric
	the mat that forms the floor of the ring in which boxers or professional wrestlers compete
	a tent made of canvas fabric
	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

diagnose (verb)	canvass (verb)
determine or distinguish the nature of a problem or an illness through a diagnostic analysis	consider in detail and subject to an analysis in order to discover essential features or meaning
subject to a medical analysis	solicit votes from potential voters in an electoral campaign
	get the opinions (of people) by asking specific questions