retard vs succeed

retard

verb
  • To put off; to postpone. 

  • To decelerate; to slow down. 

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

noun
  • Retardation; delay. 

  • A slowing down of the tempo; a ritardando. 

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

succeed

verb
  • To come after or follow; to be subsequent or consequent; (often with to). 

  • To ascend the throne after the removal or death of the occupant. 

  • To prevail in obtaining an intended objective or accomplishment; to prosper as a result or conclusion of a particular effort. 

  • To follow something in sequence or time. 

  • To prosper or attain success and beneficial results in general. 

  • To support; to prosper; to promote or give success to. 

  • To descend, as an estate or an heirloom, in the same family; to devolve; (often with to). 

  • To come in the place of another person, thing, or event; to come next in the usual, natural, or prescribed course of things; to follow; hence, to come next in the possession of anything; (often with to). 

  • To replace or supplant someone in order vis-à-vis an office, position, or title. 

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