I don't know I need similarities not differences.
One key difference between feudal Europe and feudal Japan lies in their social hierarchies and roles within the class structure. In Europe, the feudal system was characterized by a rigid class structure with kings, nobles, knights, and peasants, while in Japan, the system was more focused on the samurai warrior class, who held significant power and loyalty to their daimyo (feudal lords). Additionally, the cultural and religious influences, such as the prominence of Christianity in Europe versus Shinto and Buddhism in Japan, shaped their respective societies and governance.
The Coat of Arms was invented in Feudal Europe before the concept of the Nation State (or country) was developed.
Europe and Japan were both feudal societies. Feudal systems contain hierarchies. The hierarchies in Japan and Europe were similar: king/emperor on the top, nobles next, then knights/samurai, then merchants and craftsmen, and lastly, peasants and serfs.
because
the relations between landowners and serfs varied from refion to region
It was the government of Europe for a 1,000 years.
It eliminated the feudal system in Europe. Which gave increased power to the king.
The strengthening of the feudal system
Feudal lords.
Europe
because they had the same feudal systems at the same time
peasant or serf