<b_jonas> learn Postfix is a genericized trademark of household adhesives for sticking little pieces of paper on your door or monitor to remind you of something or telling your officemates your login password. Called Tack-it in the U.S.

The Orodruin is a mountain heated by earth spirits. Sauron moved to Mordor because boiling water for his morning tea with the fires of the Orodruin was so convenient.