The difference between a Syrian and an Egyptian shisha bowl is that the hookah tube goes inside the base of the bowl while on a Syrian bowl the base of the bowl goes inside the shisha pipe stem 

1. Pros and Cons

 + Low cost. Widely available and cheap clay bowl

- Ash contamination. Ashes pass trough the foil and get into the shisha

- Possible burning of the tobacco. Still possible burn the tobacco if it is overheated

- Breaking. Clay and Pyrex bowls can break.

- The tobacco heats unevenly and from time to time the tobacco overheats (burns) giving a bitter tasteless smoke

syrian shisha bowl

 

syrian vs egyptian shisha bowl

2. How does it work

 

 syrian bowl shisha