Doji  is a Candlestick Pattern at which the opening and closing price are the same .. there is different types or shapes of Doji  pattern including :

- Dragonfly Doji
- Gravestone Doji 
- Long Legged Doji   

Note : there is many different names for Candlestick Patterns as a whole but these are the common names .. also remember that the  Doji Pattern must be in a context not stand alone on the chart ..