For the Hanukkah menorah (chanukiah), any kind of candle that will fit, provided they burn at least 1/2 hour after dusk.
Christmas is not a Jewish occasion. The candles you're asking about are the menorah candles of Hanukkah.
Shamesh
There are only eight candles on the menorah; plus a ninth which is used to light the other candles.
The candles on the Menorah can be of any color.
It is lit with candles or oil and wicks.
It is called the Shamash. It is used to light all of the other candles on the Menorah or Chanukiah.
Yes - though ideally, a menorah (or hanukkiyah) should burn olive oil.
there are 8 candles
In Hebrew it is called the Shamash. It is used to light all of the other candles in the Hanukkah Menorah or Hanukiah.
The menorah of the Holy Temple had 7 oil lamps (Exodus ch.25). However the specialized Hanukkah menorah (Chanukiah) has 9 candles.
The candles (or oil) of the menorah are lit with the shamash (the helper candle), which is positioned on the menorah either slightly higher or lower than the other candles but not on the same level as them.
The candles are put into the Hanukkiah (Hanukkah-menorah) starting on the first evening) of Hanukkah. The candles are lit in the early evening after sunset or later.
It is called the Shamash
The hanukkiah, also called Hanukkah-menorah, is a candelabra that holds 9 candles and is used for the holiday of Hanukkah.