What are the differences between these different types of darkness?
What is the difference between the stones of darkness, the chains of darkness, mist of darkness, outer darkness, and a darkness which may be felt?

Job 28:3 He setteth an end to darkness, and searcheth out all perfection: the stones of darkness, and the shadow of death.

II Peter 2:4 For if God spared not the angels that sinned, but cast them down to hell, and delivered them into chains of darkness, to be reserved unto judgment;

  17 These are wells without water, clouds that are carried with a tempest; to whom the mist of darkness is reserved for ever.

Matthew 25:30 And cast ye the unprofitable servant into outer darkness: there shall be weeping and gnashing of teeth.

Exodus 10:21 And the LORD said unto Moses, Stretch out thine hand toward heaven, that there may be darkness over the land of Egypt, even darkness which may be felt.