adverse possession alodial alodium burgage claim colony copyhold de facto de jure dependency derivative title equitable estate estate at sufferance estate for life estate for years estate in expectancy estate in fee estate in possession estate tail fee fee fief fee position fee simple fee simple absolute fee simple conditional fee simple defeasible fee simple determinable fee tail feod feodum feud feudal estate fief fiefdom frankalmoign free socage freehold gavelkind having title to hold holding knight service lay fee lease legal claim legal estate legal possession mandate occupancy occupation original title owning paramount estate particular estate possessing possession preoccupancy preoccupation prepossession prescription property property rights proprietary rights remainder reversion seisin socage squatting sublease tenancy tenantry tenure tenure in chivalry title underlease undertenancy usucapion vested estate villein socage villeinhold villenage