A ceramicist is someone who studies ceramics. In other words, someone who studies pots and broken pottery pieces.
Archaeologists find thousands of little pieces of pottery everywhere that they dig.
Often these pottery pieces can be used to determine the date of an archaeological site. The Coptic Church is the Christian church in Egypt, therefore all of the monestaries in the area of Wadi Natrun are Coptic. In many ways it is similar to the Greek Orthodox Church. Monestaries and monks are very important to the Coptic Church, and only monks can become pope. The pope of the Coptic Church is separate from the Roman Catholic pope, although the two are not in opposition on most issues.