genius vs retard

genius

adj
  • Ingenious, brilliant, very clever, or original. 

noun
  • Inspiration, a mental leap, an extraordinary creative process. 

  • Someone possessing extraordinary intelligence or skill; especially somebody who has demonstrated this by a creative or original work in science, music, art etc. 

  • Extraordinary mental capacity. 

  • The tutelary deity or spirit of a place or person. 

retard

noun
  • Retardation; delay. 

  • A slowing down of the tempo; a ritardando. 

  • A person or being who is extremely stupid or slow to learn. 

verb
  • To put off; to postpone. 

  • To decelerate; to slow down. 

  • To keep delaying; to continue to hinder; to prevent from progressing. 

How often have the words genius and retard occurred in a corpus of books? (source: Google Ngram Viewer )