Nothing, zero, nothingness

Pure zero is also not the same as the concept of nothing. Nothing is a level of existence where not even one desired item exists. But fundamentally, nothing is part of existence. Mathematics, in its most basic application, deals with counting entities. That is, counting what has been accepted as existing. But nothing is the manifestation of the absence of being. It is the beginning of existence and its foundation, but it is not nothingness.