The episode explains the historical terms Samurai, Bushi, Ronin, and Hatamoto within the context of feudal Japan.

Samurai, deriving from the verb "to serve," initially denoted a servant of a higher-ranking individual.

Bushi, meaning "gentleman of war," was the earlier term for Japanese warriors, distinguishing them from later Samurai by social standing.

A masterless Samurai was known as a Ronin, while a Samurai directly serving the Shogun was called a Hatamoto.

The passage clarifies the distinctions and historical evolution of these warrior classes.