ïï Shi'a-This group thought that the caliph should be a relative of the Prophet, and so they rejected the Umayyads' authority. Shi'a means the party of Ali, and they sought revenge for Ali's death. Even though the caliphate continued for many years, the split contributed to its decline as a political system.
Rhinorrhea or rhinorrhoea is a condition where the nasal cavity is filled with a significant amount of mucus fluid.
When people say that they have drainage, they usually mean one of two different things. If by drainage you mean the you can blow your nose and excessive amounts of liquid are produced, the best name for that is rhinorrhea, or runny nose. If you mean that you feel drainage going down your throat then the best name for that is post nasal drip. The distinction between the two is very important. Often people have both, and in that case the rhinorrhea is the more important symptom from a diagnostic standpoint.