There are many differences between a crafts guild from the medieval times, and a workers union from today. First you must identify what a guild and a union both are, so first, a guild is "A similar association, as of merchants or artisans, in medieval times." (dictionary.com) While there are many definitions of a union, and many being unclear, I will do my best to determine what my definition of what a union is. There are many different types of unions; there is one for every job type there is (auto repair, musicians, taxi drivers, so on and so forth) and when you join a union you have to pay a regular fee, but you get something out of it too. If you get in some sort of trouble, where you could even be fired or harmed in some way, your union will...