Canvass is actually a verb, so it has no plural form. The noun is canvas, and the plural of the noun is canvasesor canvasses.
Canvasses is also a verb when used in the context of "He canvasses support for his sporting club every time he goes out with his mates."
It is a noun as in canvass you paint on. It is a verb as in to canvass someone for a vote.
Bridges is the plural form of bridge.
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
There is no plural form for the word, countries. This word itself is a plural.
There is no plural form of pupae. Pupae is the plural form of pupa.
The plural form for the singular noun canvass is canvasses.
A homophone for canvass is Canvas.
It is a noun as in canvass you paint on. It is a verb as in to canvass someone for a vote.
Canvass for a Cause was created in 2009.
There is no plural form. Do and Do not are verbs
The students volunteered to canvass the neighborhood for our candidate.
The budget of Canvass for a Cause is 1,200,000 dollars.
The plural form of him, her, or it is them. (objective pronouns)
Bridges is the plural form of bridge.
The plural form of "is" is "are."
The plural form of "I" is "we."
The plural form of "was" is "were."