The canvas was a window to another world.
Meaning: This sentence is describing how the canvas is a portal to another world, where anything is possible.
Choice of Words: Canvas is a noun that refers to a piece of cloth or other material used for painting. Window is a noun that refers to an opening in a wall or door that allows light and air to pass through. Another world is a noun phrase that refers to a world that is different from the one we live in. When you put them together, the sentence is describing how the canvas is a portal to another world, where anything is possible.
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