The difference between Lever action and Rolling block

When used as nouns, lever action means a type of firearm action which uses a lever located around the trigger guard area, to load fresh cartridges into the chamber when the lever is worked, whereas rolling block means a form of firearm action where the sealing of the breech is done with a specially shaped breechblock able to rotate on a pin.

check bellow for the other definitions of Lever action and Rolling block