Complex sentence: While "Western religion" encompasses more than Abrahamic religions, it is often used in a way that excludes non-Abrahamic religions or particularly to refer to Christianity, as the religion most commonly associated with western nations.
Split into simpler sentences: While "Western religion" encompasses more than Abrahamic religions, it is often used in a way that excluded non-Abrahamic religions. It also often particularly refers to Christianity, as it is the religion most commonly associated with western nations.