Humiliation
Humiliation is literally the act of being made humble, or reduced in standing or prestige. However, the term has much in common with the emotion of shame. Humiliation is not in general a pleasant experience, as it reduces the ego.
Humiliation need not involve another person; it can be a recognition of one's own standing, and can be a way of casting away false pride. Ascetics have used a number of techniques to humiliate themselves, including mortification of the flesh.
Humiliation of one person by another is often used as a way of asserting power over others, and is a common form of oppression or abuse. Humiliation of others is generally motivated by sadism. Many punishments are deliberately designed to be humiliating, e.g. tarring and feathering, pillory, mark of infamy (stigma).
Humiliation, as in the 2004 Abu Ghraib prisoner abuse, may include (also in combinations):
Some of the above are forms of sexual humiliation.
However, some people find humiliation by others erotic in certain circumstances: see erotic humiliation.
See also:
Humiliation of the self
Humiliation of others
Physical abuse is, in addition to the physical damage, also humiliating, as is intimidation. Rape may, in addition to being humiliating, cause physical damage, including being infected by a sexually-transmitted disease, and also the physical abuse of making a woman pregnant. Also, being kept on a dog leash in a physically rude way can in addition cause physical damage, etc.