While I am not a historian, I am aware that what we call "Feudalism" (manoralism?) only existed in certain time periods in certain countries during medieval times in Europe (someone please correct me if I'm mistaken). What I am more interested in is a comparison of the class structures in what is often called the Feudal periods in Europe and Japan. For example, did Japan also have serfdom and did the peasantry have more freedom in terms of labour mobility? Did Japan also have guilds, and if so, how monopolistic & monopsonistic were they? And finally, how similar were the samurai and knights?

Edit:grammar