Cessation is an end to something, such as the stopping of a bad habit, like the cessation of smoking.
Cessation and cease sound alike and have similar meanings because they both come from the Latin word cessare, which means "to delay, to stop." The cessation can be permanent, such as when the protests resulted in the cessation of the use of baby bunnies to test lipsticks (forever ending the bunny torture); or temporary, such as the cessation of the rain during the storm that let us run to the car without getting wet (but rain, like sunshine, always comes back).