Customary law, based on tradition and local practices, was the primary source of law in medieval Europe.

Canon law, derived from religious teachings and ecclesiastical decrees, was developed by the Church to govern its internal affairs.

Feudal law primarily aimed to define the reciprocal obligations and rights between feudal lords and their vassals.

Seisin, the legal possession of land, granted medieval lords the right to exercise jurisdiction over their territories.

Medieval courts primarily aimed to administer justice by resolving disputes, enforcing laws, and punishing offenders.

Escheat, the reversion of land to the lord upon the death of a tenant without heirs, allowed medieval lords to claim ownership of land.

Trial by ordeal, involving physical challenges or divine intervention, was the primary method of resolving disputes in medieval Europe.

Habeas corpus, a legal principle requiring a person under arrest to be brought before a judge, protected individuals from arbitrary imprisonment in medieval England.

Medieval guilds primarily aimed to regulate trade and commerce by setting standards, controlling prices, and protecting the interests of their members.

Feudal dues, consisting of payments and services, were the primary means by which medieval lords collected taxes from their vassals.

Medieval manorial courts primarily aimed to administer justice within the manor by resolving disputes, enforcing laws, and punishing offenders.

Feoffment, the transfer of land from a lord to a vassal in exchange for military service, was a key concept in medieval feudalism.

Medieval charters primarily aimed to grant rights and privileges to individuals or groups, such as towns, guilds, or religious institutions.

Prescription, the legal acquisition of title to land through long-term possession, allowed medieval lords to claim ownership of land that had been abandoned or left uncultivated.

Medieval coroners primarily investigated sudden or unexplained deaths to determine the cause and manner of death.