develop vs rot

develop

verb
  • To acquire something usually over a period of time. 

  • To progress through a sequence of stages. 

  • To bring out images latent in photographic film. 

  • To advance; to further; to promote the growth of. 

  • To place one's pieces actively. 

  • To change with a specific direction, progress. 

  • To create. 

  • To cause a ball to become more open and available to be played on later. Usually by moving it away from the cushion, or by opening a pack. 

  • To change the form of (an algebraic expression, etc.) by executing certain indicated operations without changing the value. 

rot

verb
  • To spend a long period of time (in an unpleasant place). 

  • To expose, as flax, to a process of maceration, etc., for the purpose of separating the fiber; to ret. 

  • To suffer decomposition due to biological action, especially by fungi or bacteria. 

  • To decline in function or utility. 

  • To (cause to) deteriorate in any way, as in morals; to corrupt. 

  • To make putrid; to cause to be wholly or partially decomposed by natural processes. 

noun
  • Any of several diseases in which breakdown of tissue occurs. 

  • The process of becoming rotten; putrefaction. 

  • Verbal nonsense. 

  • Decaying matter. 

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