Allah ( اللَّه ) is driven from the root ‘Aleha’ (أَلِهَ) to mean ‘worshiped’. Thus, any deity – whether false or true, objects or humans – is called in Arabic ‘Elah’, whereas ‘Allah’ is a distinguished name to refer to the real Creator. The testimony of faith in Islam is expressed in Arabic as (لا إِلهَ إِلَّا اللَّه) ‘La Elaha ellAllah’ (there is no deity worthy of worship but Allah).
It is important to note that as Muslims we do not worship the name of ‘Allah’. Thus, you may refer to the reality of the One and only Creator using any good name: “To Allah belong all the most beautiful names, so call on Him by them.” (The Holy Qur’an 7:180)
However, we believe the term ‘Allah’ expresses the monotheistic concept of the Creator more accurately than the English ‘God’. Literally speaking, unlike ‘god’ there is no plurality for ‘Allah’. Similarly, the term ‘Allah’ is gender free.