Canon - नियम (a rule, principle, or law, especially in the Christian Church)
The canon for lawyers has clear restrictions.
Cannon - बंदूक (a powerful arm that allows someone to throw a ball very hard)
The cannon were positioned on the field of battle.
Canvass - प्रचार (to try to get political support or votes, especially by visiting all the houses in an area)
I've been out canvassing for the Party every evening this week.
Canvas - मोटा कपड़ा (strong, rough cloth used for making tents, sails, bags, strong clothes, etc.)
The artist spread vibrant colors across the canvas, bringing her vision to life.