The name is only a finger pointing at the moon. You can call it "God", "Tao", "Source", etc, whatever label which conveys the same concept.

Brahma is the word that you are thinking of. Brahman stands behind that. Brahman is that which is the source of all beings, phenomena, concepts and ideas. It isn't the word that matters, but the concept it attempts to convey. That said, it can be strange to try and understand the concept of that which is beyond the idea of a concept. But, that is the limitations of language for you...

Hope this helps.