"Allah" just means "God" in Arabic. Islam shares characters with Christianity and Judaism, the only character it doesn't share with Christianity or Judaism is Muhammad, and the only character Islam and Christianity don't share Jesus with is Judaism. There is no truth in the Bible, the Torah, OR the Quran. ALL THREE holy texts are works of fantasy created by cultures seeking to justify their own problems.
I'm not the one who thinks Christianity, Judaism, and Islam are completely and totally different. That would be you. They're all part of the same religion hole, they're all Abrahamic religions.
Oh no no no no, don't give me any of that crap. Islam is an Abrahamic religion too. Muslims ALSO believe in Yahweh. They believe in Abraham, Isaac, Jacob, Moses, Cain, Abel, Adam, Eve, the whole kit and kaboodle.