When an artist represents an object with a simplified, exaggerated or expressive rendering this term is used?

Stylization.

It’s used when an artist wants to step away from the conventional representation of their chosen subject or concept.
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Religion changed from primitive times through the renaissance period until today such that certain church conventions and rules were set about how the holy family could be portrayed. for instance: mary must always be in a blue mantle, jesus could only be in a white robe after the resurrection, jesus could no longer be seen pointing with his walking stick when performing a miracle, and so on.hope this