dissipate vs reap

dissipate

verb
  • To use up or waste; squander. 

  • To drive away, disperse. 

  • To vanish by dispersion. 

  • To cause energy to be lost through its conversion to heat. 

reap

verb
  • To obtain or receive as a reward, in a good or a bad sense. 

  • To terminate a child process that has previously exited, thereby removing it from the process table. 

  • To gather (e.g. a harvest) by cutting. 

  • To cut (for example a grain) with a sickle, scythe, or reaping machine 

noun
  • A bundle of grain; a handful of grain laid down by the reaper as it is cut. 

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