What is the difference between fee simple determinable and fee simple subject to condition subsequent?

Fee simple determinable and fee simple subject to condition subsequent are both types of ownership in real property that come with conditions. The main difference between the two is in how the ownership can be terminated. In fee simple determinable, the ownership automatically ends if a specific condition is violated, while in fee simple subject to condition subsequent, the owner has the right to reclaim the property if the condition is violated.