a inhibitor is a mean of electrical machine
antioxidant is inhibitor. inhibitor is not substance. adp_inhibitor is medicine. pde2_inhibitor is pde_selective_inhibitor. electrical_resistance is electrical_quantity. inhibitor is substance. machine is apparatus. electrical_inductance is electrical_quantity. direct_thrombin_inhibitor is blood_thinner. direct_thrombin_inhibitor is not blood_thinner.