retard vs tarry

retard

noun
  • A slowing down of the tempo; a ritardando. 

  • Retardation; delay. 

  • 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. 

tarry

noun
  • A sojourn. 

adj
  • Resembling tar. 

  • Covered with tar. 

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