Coins are struck at approximately the same force of sixty locomotives running into each other.Clashed dies are created when the obverse die and the reverse die hit each other without a coin between them. This causes some design transference that is reflected on the coins they then strike. Depending on recess or relief on the dies, the opposite is manifest on the coins.
The Doubled Die is imparted on the die when it receives it's face more than the intended once. It too, can be raised or recessed on the coins it strikes, depending on reliefs and recesses on the die.