Answer 1
All people who did not believe in prophet Mohammed, his message and religion of Islam are called "Kafir كافر" in Arabic language. The word Kafara كفر or Kufr كُفر means covering "by a blanket or so", meaning the have COVERED THE TRUTH "ISLAM" in order not to be seen by others. That is all. It is not a racial or an offensive word against other religions or people, it is just a character of non-believers in Arabic language.
I've seen on the Wikipedia that it is offensive and racial word. I'm an Arab and the Arabic language is my mother tongue and hereby tells you the truth. It is not a bad or offensive word, it is only an adjective word.
Christians, Jews and others lived in the Arab region for thousands of years with equality and justice and they know these words because they speak Arabic too.
Answer 2
There are three general words used in Arabic to refer to non-believers in an Islamic context. There is Kaafer (كافر) which means "denier" or "negator" since they are denying or negating the truth of God. A Kaafer is someone who rejects God in an Islamic context. There is also Mushrik (مشرك) which refers to a polytheist or pagan, i.e. someone who believes in more than one God. Finally, there is Ahl Al-Kitaab (أهل الكتاب) or Ahl Adh-Dhimma (أهل الذمة) which refer to the "People of the Book", non-Muslim monotheists like Jews and Christians.
Contrary to Answer 1's proclamation, I am rather familiar with Jewish and Christian communities from the Arab world and Kaafer is used as a derogatory insult even against Christians and Jews who DO believe in the same God as the Muslims. It is not a neutral or acceptable term in a non-Islamic context. If a person wishes to discuss Atheism or true non-belief in a modern context, the proper word is Mulahed (ملحد).
Taquia
Kafir
1. Christianity 2. Islam 3. Nonbelievers Islam and Christianity are about to switch places.
It depends on the religion: in Islam, nonbelievers are sometimes called infidels, which is also the old term used in Roman Catholicism. Other terms are heathen, pagan, or nonbeliever.
Sadducee
"Islam" is a broad category, as is "non-believer". The Wahhabi and Salafi sects of Islam are often quite violent and rigid in the fundamentalist nature of their religion, and Christians and Jews are required to pay a tax or be killed. "Pagans" must convert or die. Less-strict factions of Islam do not try to implement these articles of their faith.
Islam sees rejecting Islam and becoming an atheist as apostasy with its associated punishments. Atheism in non-Muslims is of no concern as all non-Muslims are equally seen as nonbelievers. Answer 2 Argue them about God. please read the book "Tradition of Mufaddal"
When a Christian reverts to Islam they are called Muslims ;)
No the sacred book of Islam is called The Holy Qur'an
For those called 'nonbelievers', the death of Jesus is of no interest - they may have their own path to paradise. If there was a purpose at all in Jesus' death, it was for the sins of believers.
Arkanal Islam
People who follow the religion of Islam are called MUSLIMS.
There is nothing in Islam called Symbol.
The believers of Islam are called Muslims