mow vs reap

mow

verb
  • To cut down grass or crops. 

  • To make grimaces, mock. 

  • To cut down or slaughter in great numbers. 

  • To put into mows. 

noun
  • A scornful grimace; a wry face. 

  • A stack of hay, corn, beans or a barn for the storage of hay, corn, beans. 

  • The place in a barn where hay or grain in the sheaf is stowed. 

  • The act of mowing (a garden, grass, etc.). 

  • A shot played with a sweeping or scythe-like motion. 

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