Why Muslims should say ALLAH?
ALLAH is a unique word, the name ALLAH has no plural, no antonym, no masculine & no feminine because ALLAH is one,
But Khuda,God,Lord & all other names have their plural, antonym, masculine & Feminine i.e
God=Gods,Goddess
Khuda=Khudaoun, Khudahan
Lord= Lords etc.
but ALLAH is (ONE)