What's the difference between woodblock printing and letterpress?

Question: What's the difference between woodblock printing and letterpress!?
Best Answer - Chosen by Asker:

Letterpress printing involves locking movable type into the bed of a press, inking it, and rolling or pressing paper against it to form an impression!.

Woodblock printing the wood block is prepared as a relief matrix, which means the areas to show 'white' are cut away with a knife or chisel, leaving the characters or image to show in 'black' at the original surface level!.
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