Many people ask why the term "Allah" is used instead of "God" and assume it's use implies that Muslims worship a separate God. There is only ONE GOD - a belief held by followers of each of the three main world religions : Islam, Christianity and Judaism. 

The Arabic word for God is "illah". "Allah" is in fact a conjunction of two words (i.e. Al-Ilah): 

•  "Al" which means "The"
•  "Illah" which means "God" 

 1.  'Allah' has no gender. So 'God' can be male or female [i.e. God or Goddess]
 2.  'Allah' is ONE and literally means THE GOD. Yet the use of word 'God' implies the singular and plural [i.e. God/Gods and Goddess/Goddesses] can be used.
 3.  'Allah' is the personal name of God as is used in the Holy Qur'an, and 'Elohim' is used in Hebrew referring to Allah. The end letters 'im' is a plural indicative of respect, majesty and grandeur. Yet without the ending of 'im', it becomes Eloh (Ilah in Arabic).