Canvas is a type of Setting. Setting is related to Scene. Scene is related to Landscape. Landscape is related to Look. 
Rare is a synonym of Unusual. Unusual is derived from Usual. Usual is the opposite of Odd. 
Canvas --IsA--> Setting <--RelatedTo--> Scene <--RelatedTo--> Landscape <--RelatedTo--> Look 
Rare <--Synonym--> Unusual --DerivedFrom--> Usual <--Antonym--> Odd 