A more thorough explanation:

CANUM

Canum is a term from Law Latin that refers to a type of tribute or duty that a tenant had to pay to their lord. This tribute usually consisted of a portion of the produce that was grown on the land.

For example, if a tenant was farming a piece of land that belonged to a lord, they would have to give a portion of their crops to the lord as canum. This tribute was a way for the lord to collect revenue from their tenants and maintain their power over the land.

Another example of canum might be a tax on livestock. If a tenant had animals on the land, they might have to give a certain number of them to the lord as part of their tribute.

The examples illustrate how canum was a way for lords to collect revenue from their tenants. By requiring a portion of the crops or livestock, the lord could ensure that they had a steady source of income from the land. This system was common in feudal societies, where lords had a great deal of power over the people who lived on their land.