The Arabic word for God (i.e. Allah) is formed by adding the word for “the” (Al-) to the word for “God/God” (ilah). So the Arabic word “Allah” is not a name, but literally means “The God” or “The One True God”. Historically, the Muslim, the Jewish, and the Christian God have the same Abrahamic origin, but that is not to say that the present day Allah is the same as The God who is the foundation of Judaism and Christianity. Here is 4 characteristics from the Koran of Allah and how they differ from God.
First, Allah is the Perfecter, or maker, but offers no means of perfecting man or providing a means of salvation. While God must and always does punish sin, Allah can capriciously overlook or suspend his judgment depending how he feels about the sinner and his sin. The sinner can work hard at ‘good’ works and persuade Allah, “The God”, to reward him for their efforts rather than hold them accountable. God hates sin and demands, as a just God, that every and all sin be accounted for and redeemed by the sacrifice of the sinner. There is no exception, no special favors, no looking the other way, God is just. No one gets into heaven by their less than perfect life.
Second, Allah is most gracious. He doles out his favor to whoever he pleases. He, by his hand and his power, directly manipulates and administrates the events of the universe according to his desire, which again is capricious. God, on the other hand, is the same yesterday, today, and tomorrow, and can be counted upon. He is consistent and dependable and favors all of his creation.
Third, Allah is ever merciful, but only to those who serve him well. His mercy can be withdrawn at any time, especially if one becomes an infidel. God’s mercy extends to all who ask him and even to those who don’t, “even while we were yet sinners”. There are no conditions.
Fourth, Allah is sovereign and independent. He is worthy of love, but does not show love to his creation nor does “The God” have a personal relationship with his people. He does not dwell among, and does not talk directly with his followers, only the prophet. He has never lowered himself down to the level of his people. God, by his nature, loves his people, and dwells among them.
Allah asks his followers to prove themselves to him, God does not. When a Christian or Jew talks about one who is removed from his followers, can not be depended upon, who is capricious, and offers only wrath and judgment, but not salvation from their sin, and is only interested in death and destruction and getting his own way, they are usually talking about Satin.