A more thorough explanation:

Felonia is a word that comes from Latin and means "felony". In history, it referred to a serious offense that caused a vassal to lose their land or property.

• If a vassal committed felonia, they could lose their land and be punished.
• In feudal times, felonia was a crime that went against the feudal relationship between a lord and their vassal.

These examples show how felonia was a serious offense that had consequences for the vassal who committed it. It was an important concept in feudal law and helped to maintain the power dynamic between lords and vassals.