cull vs reap

cull

verb
  • To gather, collect. 

  • To select animals from a group and then kill them in order to reduce the numbers of the group in a controlled manner. 

  • To pick or take someone or something (from a larger group). 

  • To kill (animals etc). 

  • To lay off in order to reduce the size of, get rid of. 

noun
  • A lobster having only one claw. 

  • A selection. 

  • An individual animal selected to be killed, or item of produce to be discarded. 

  • A piece unfit for inclusion within a larger group; an inferior specimen. 

  • An organised killing of selected animals. 

  • A fool, gullible person; a dupe. 

reap

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

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

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

  • 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 cull and reap occurred in a corpus of books? (source: Google Ngram Viewer )