FEUDALISM WORDS

CHEVALIER
FIEF   VASSAL  
(Susan Reynolds book 1994)
ANCIEN REGIME (governed France before the1789 Revolution)
BENEFICE (Often used as equivalent to "fief", but also for the land holding of a priest)
INCIDENTS:   RELIEF   WARDSHIP & MARRIAGE
COUNSEL  
AID  
INVESTITURE   EUCHARIST
DEFIANCE
SUZERAINTY
(Late medieval coinage, meaning overlordship)
SEIZIN (comes to mean possession of land)
ESCHEAT