Is "Grinch" A Title Or The Name Of A Species?

Is one born a grinch, or does one have the title of grinch bestowed upon them? Answer below. (Inspired by @jduganbarrett)
  1. I think it was his name and then The Who's bullied him for being different and it became separate from them.
    Suggested by   @lyssa580
  2. Grinch is a racial slur and the narrator and everyone in the town, they're all awful bigots
    Suggested by   @tombatten