Below is the “meaning of Allah” according to Wikipedia online.
Allah (English pronunciation: /ˈælə/ or /ˈɑːlə/;[1] Arabic: الله Allāh, IPA: [ʔɑlˈlɑː] ( listen), [ʔalˤˈlˤɑː]) is a word for God, mostly used in the context of Islam. In Arabic, it is the standard word for "God," used not only by Muslims, but also by Bahá'ís, Eastern Catholic Christians, Maltese Roman Catholics, Eastern Orthodox Christians, Mizrahi Jews and Sikhs.[2][3][4]
From what I have read, it is stating that Allah is a word for God but mostly in context in Islam. As I research the Islam part of it, it states that Muhammad is the messenger of God or Allah.
And there we go. That is what separates the two. We serve GOD not Allah. Christians serve God and not the other. If you go with the Christian part of it then you must follow the Christian belief. That God is God. The Word of God does not say anything in it with the words “Allah” in it. Not mine anyway. ( I am sure you can buy a translation that will say what you want it to say) If you go with the Islamic part of it then you must believe the part of it that says that Muhammad is the messenger of God. Again, The Word of God does not mention Muhammad as being the messenger of God. The Word does mention that the only way to God the Father is through Jesus Christ. That is who I serve and worship and that is why I and My family have eternal life. Jesus is the Reason.
In the world today, you will read and hear lots of things but you cannot believe everything you read and hear. It has to line up with the word of God. One example is that a web site trying to teach the reader that Allah and God are the same. It has a statement on the website that says:
On page one [1] of Genesis in the Old Testament, we find the word "Allah" seventeen [17] times.
Well, I am not sure what translation of the Bible they are using but none of my Bibles have that in it. Be careful of what you read and hear. Don’t be swayed. Serve God through Jesus!