I have defined matter and energy as follows (elsewhere), but is it possible to define them independent of each other?
Meanings of ‘Matter’ and ‘Energy’ Contrasted: By ‘matter’ I mean whatever exists as the venue of finite activities of existents and itself finitely active in all parts. Matter is whatever is interconvertible with existent energy.
Existent ‘energy’ is conceived as those propagative wavicles which, in a given world of existents, function as the fastest existent media of communication of someeffects between any two or more chunks of matter or of energy (i.e., of motions / changes).
Existent matter and existent energy are inter-convertible, and hence both should finally be amenable to a common definition: whatever exists with, in all parts, finite activity and stability.