Yes. The Kurds are an overwhelmingly insular community.
Yes, but there are minorities of Shiite Muslim Kurds, Yazidi Kurds, and Baha'i Kurds.
Most Kurds are Muslims, so yes. There are a minority of Kurds who are Yazidi or Zoroastrian which are henotheistic faiths and not strictly monotheistic. There are also Kurds who are Atheists.
No. There are currently ~35 million Kurds.
Arabs are more, kurds are about 17% of Iraq, they are about 4-5 million kurds in Iraq (there are more than 20 million kurds in the world), the kurds grew more and more powerful in Iraq, now the president of Iraq is a kurd.
kurds
Kurds are members of a mainly pastoral Islamic people living in Kurdistan.
There are around 6.5–7.9 million Kurds in Iran and 6.2–6.5 million Kurds in Iraq, so there are more Kurds in Iran. However, as the Iranian population overall is significantly larger, Kurds make up a more significant percentage of the population in Iraq.
Generally, No. Of the overall 35 million Kurds, there are less the 35,000 Christian Kurds, which makes Christians less than 0.1% of the Kurdish population. Understandably, Christian Kurds celebrate Christmas, but Muslim, Jewish, Yazidi, Zoroastrian, and non-religious Kurds do not celebrate Christmas.
Kurds are an ethnic group. While the majority of Kurds are Sunni Muslims, there are significant religious minorities among the Kurds such as Shiite Muslims, Jews, Christians, Baha'i, Yarsan, Yezidi and other religions.
There are between 6.2 and 6.5 million Kurds in Iraq.
Turkey has the largest population of Kurds, with estimates ranging from 15 to 20 million people. Kurds are the largest ethnic minority in Turkey.