The main way to differentiate the three religions is to think about the God that they believe in. Christianity is centered on Jesus as Lord's son, and Islam considers Allah as God. In Buddhism, the Buddha is worshiped.
Rivalry between Isaac and Ishmael has persisted through the centuries in the antagonisms between Jews and Arabs.
See the link below for a chart comparing Islam, Christianity and Judaism.
Both Islam and Christianity originated out of Judaism.
christianity islam
The connection between Islam, Christianity and Judaism is that the three religions trace their history to the covenant between God and Abraham.
There is no war between Christianity and Islam. Some extremists in both groups are using religion for very ungoldy purposes.
To find out how Islam compares to Judaism or Christianity, please see the Related Questions below. The main difference between the Arab beliefs prior to Mohammed and Islam was that the Arabs were henotheists (polytheists with one god who is more powerful than the others). They would worship their gods by way of altars and idols. They sacrificed their children on occasion and did other barbaric activities. Islam repudiated these activities.
Christianity is older than Islam.
The question should be " What does Christianity have to do with Jews (or Judaism)?" Judaism is like a tree where Christianity is its branch and Islam is it leaves. Christianity is based on Judaism and Islam is based on Christianity. The major difference between the three is that Judaism doesn't have jesus in it unlike Christianity and Islam.
Christianity: Son of God (Messiah) Islam: Prophet Judaism: False messiah
Islam, Judaism and Christianity.
There are a few very obvious differences between Christianity and Islam. They follow different holy books and also have different names for their God.