proton vs. electron

proton

noun

Physics, Chemistry.

  1. a positively charged elementary particle that is a fundamental constituent of all atomic nuclei. It is the lightest and most stable baryon, having a charge equal in magnitude to that of the electron, a spin of ½, and a mass of 1.673 × 10 -27 kg. P

electron

noun

  1. Also called negatron. Physics, Chemistry.,  an elementary particle that is a fundamental constituent of matter, having a negative charge of 1.602 × 10 −19 coulombs, a mass of 9.108 × 10 −31 kilograms, and spin of ½, and existing independently or as the component outside the nucleus of an atom.

  2. Electricity.,  a unit of charge equal to the charge on one electron.