retarded vs scrubbed

retarded

adj
  • Delayed; delayed in development, hindered; impeded. 

  • Designating a parameter of an electromagnetic field which is adjusted to account for the finite speed of radiation. 

  • Extremely stupid. 

scrubbed

adj
  • Dwarfed or stunted; scrubby. 

  • With hands washed according to operating room protocol and wearing sterile gown and sterile gloves. 

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