Metaphor: 1530s, from M.Fr. metaphore, from L. metaphora, from Gk. metaphora "a transfer," especially of the sense of one word to a different word, lit. "a carrying over," from metapherein "transfer, transit, carry over," from meta- "over, across" (see meta-) + pherein "to carry, bear"
A transit is the astronomical event that occurs when one celestial body appears to move across the face of another celestial body, as seen by an observer at some particular vantage point. A transit is the occultation of one celestial body moving in front of another.
Occultation: From Shia Islam. According to the last letter of Muhammad al-Mahdi to Ali ibn Muhammad al-Samarri "from the day of your death [the last deputy] the period of my major occultation (al ghaybatul kubra) will begin. Hence forth, no one will see me, unless and until Allah makes me appear. My reappearance will take place after a very long time when people will have grown tired of waiting and those who are weak in their faith will say: What! Is he still alive?"