While it may be the same abrahamic god, there is a distinction. In Christianity, god/deus/yahweh is a proper name. In Islam, Allah is from al-Ilah - The God. It

While it may be the same abrahamic god, there is a distinction. In Christianity, god/deus/yahweh is a proper name. In Islam, Allah is from al-Ilah - The God. It’s a label rather than a name, and the linguistic distinction affects the available worldviews.