hamper vs retard

hamper

verb
  • To impede in motion or progress. 

  • To put into a hamper. 

  • To put a hamper or fetter on; to shackle 

noun
  • A wicker or plastic basket specifically for holding laundry (from clothes hamper), as opposed to a covered wicker basket which is a true hamper 

  • A shackle; a fetter; anything which impedes. 

  • A large basket, usually with a cover, used for the packing and carrying of articles or small animals 

  • A gift basket. 

  • Articles ordinarily indispensable, but in the way at certain times. 

retard

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

  • To put off; to postpone. 

  • To decelerate; to slow down. 

noun
  • Retardation; delay. 

  • A slowing down of the tempo; a ritardando. 

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

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