natural philosophy(n = noun.cognition) physics - the science of matter and energy and their interactions; "his favorite subject was physics"

N  materiality, materialness, corporeity, corporality, substantiality, substantialness, flesh and blood, plenum, physical condition, matter, body, substance, brute matter, stuff, element, principle, parenchyma, material, substratum, hyle, corpus, pabulum, frame, object, article, thing, something, still life, stocks and stones, materials, physics, somatology, somatics, natural philosophy, experimental philosophy, physicism, physical science, philosophie positive, materialism, materialist, physicist, somatism, somatist, material, bodily, corporeal, corporal, physical, somatic, somatoscopic, sensible, tangible, ponderable, palpable, substantial, objective, impersonal, nonsubjective, neuter, unspiritual, materialistic.