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Are entropy and cross-entropy the same thing as per basic definition?

If there is a difference:

Decision tree splits take on entropy or Gini index, can we use cross-entropy to split decision trees? OR should I use it as an evaluation metric after running the decision tree algorithm?

Also, does the decision tree algorithm assumes any distribution?

If yes,

then how can we use the KL Divergence metric?

I am just trying to link a few concepts in a broader view.

These are my concerns with respect to the multiclass decision tree.

Thanks,

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