Fruitful communication is not possible without a common language. The language used on this board is standard English, redefining words to suit yourself is both impolite and destructive of any purpose in posting you may have. If you want to assign a philosophical name to "the basis of science" it would be methodological naturalism. The study of causes and effects in the natural world, I.e. not including magic, gods, or anything in general considered supernatural. It is not that the supernatural can't be studied or believed in, it is just not science. It is also true that if you can demonstrate a supernatural effect, as with alternative medicine, it ceases to be alternative and becomes just medicine.
Metaphysics, whatever this amorphous term even means these days is not science, it has long since lost its connection to Aristotle. If anything, the word is an example of the danger of using alternate definitions of a word.