Canvas is a noun meaning fabric.
Canvass is a verb meaning to solicit.
Chafe is a verb meaning to irritate or to make sore by rubbing.
Chaff is a verb meaning to tease.
Chord is a noun meaning a group of musical notes or a noun referring to a type of arc in geometry.
Cord is a noun meaning a length of rope or any material made of twisted strands.
Complacent is an adjective meaning content or self-satisfied or pleasing to oneself.
Complaisant is an adjective meaning cheerfully obliging or pleasing to others.
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