The reason why the word depression is too general is because depression is a normal conceptial state that everyone will endure at least once in life. Real, debilitating, actual depression, is life-long and persist regardless of any one event. It's not just a function of the mind or an emotional relationship related to life, but an absence that can only be described as emotionally detached, sociopathic, and even as an obligation of guilt and doubt simply for existing in a time you can't accept.