Coating is umbrella term (general) for any applying a material layer on the substrate. Painting is one kind of coating process (usually polymer or slurry based whic are appied via brush or spray). Coating can also be done via painting, chemical or physical deposition, electroplating, etc...
Coating are a common concept that unites the most diverse types of layers on the surface. Painting is a special case of applying coatings made of polymer based materials.
coating application you need to apply temperature and pressure in order to perform a layer while painting is just enough you apply the high temperature to cure it. Definately different process and application.
Coating is umbrella term (general) for any applying a material layer on the substrate. Painting is one kind of coating process (usually polymer or slurry based whic are appied via brush or spray). Coating can also be done via painting, chemical or physical deposition, electroplating, etc...