

A set of principles of behavior. A concept of actions that are acceptable within the social group, and actions that are not.
Elephants are animals with long memories, complex social structures, and even elaborate mourning rituals. It would not surprise me at all to find they have their own set of rules for being accepted into the herd.
They both are. Both agreements can be terminated for any reason. Larion’s says nothing that would prevent them from terminating the agreement, it only clarifies that the signer can. There’s no real difference here.