Distinguish between the following: Extension and Contraction of Supply

Distinguish between the following:

Extension and Contraction of Supply

Extension (or Expansion) of Supply
Contraction of Supply
It implies that when the price of a good rises, holding other factors constant, the quantity supplied of the good rises.
It implies that when the price of a good falls, holding other factors constant, the quantity supplied of the good falls.
It is represented by an upward movement along the supply curve. 
It is represented by a downward movement along the supply curve.
 
 

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