The Hanukkah-menorah.
It's called a menorah, or a Hanukkah menorah. Israelis call it a Hanukkiah.
No, it is not a customary Hanukkah symbol; but since it's a customary Jewish symbol, it is sometimes used in Hanukkah-themed decorations.
It would be quite easy to conclude from all the decorative lights that are put on Christmas trees, houses, and stores, that there is a logical reason for Christmas to be called the Festival of Lights, but it isn't. Christmas falls at approximately the same time as the Jewish holiday Hanukkah, which is the actual Festival of Lights, because the central symbol of Hanukkah is a candle holder (or candelabrum) with eight branches on the sides and one central candle holder. Candles are essential to this holiday (which commemorates a miraculous event in which an oil lamp burned for 8 days despite having an insufficient amount of oil).
There is no symbol for Hanukkah equivalent to a Christmas Tree. The holidays are completely unrelated.
Judaism's symbol represents David's Star.
The Hanukkah-menorah, also called a Hanukkiyyah, is used on Hanukkah.(Jewish people also have a different candle holder, called a menorah, that some venues use for decoration or as a religious symbol, all year round).
The menorah is a symbol of light and divine presence in Judaism. It represents the miracle of the oil that burned for eight days in the Temple after the Maccabean Revolt. Additionally, it is a symbol of knowledge, wisdom, and enlightenment.
There is no Islamic symbol as the cross in Christianity or David star in Judaism. Some claim that it is the moon and star which is not true.
There's no such term as "chirstions" in Judaism.
This is the Star of David, a symbol of that house at the time.
The Star of David (more properly called the Shield of David) is a symbol of the Jewish people, though to be fair, it is not an ancient symbol; it originated in the Middle Ages.
The Star of David.