canvassing vs suasion

canvassing and suasion both are nouns.

Word	Noun	Adjective	Verb	Adverb
canvassing	Yes	No	No	No
suasion	Yes	No	No	No

As nouns, suasion is a hypernym of canvassing; that is, suasion is a word with a broader meaning than canvassing:

canvassing: persuasion of voters in a political campaign
suasion: the act of persuading (or attempting to persuade); communication intended to induce belief or action

Other hypernyms of canvassing include persuasion.

canvassing (noun)	suasion (noun)
persuasion of voters in a political campaign	the act of persuading (or attempting to persuade); communication intended to induce belief or action