back end vs harvest

back end

noun
  • The latter end of any given time, especially the latter part of the year; autumn; late autumn. 

  • The processing of spent fuel from a nuclear reactor into reusable materials. 

  • That part of a hardware or software system that is farthest from the user; the internals rather than the user interface. 

  • Money paid on a contingent deferred basis, for example, as a proportion of the profits or revenue of a work. 

  • The rear, back, or unseen portion (of something). 

harvest

noun
  • The third season of the year; autumn; fall. 

  • A modern pagan ceremony held on or around the autumn equinox, which is in the harvesting season. 

  • The season of gathering ripened crops; specifically, the time of reaping and gathering grain. 

  • This year's cotton harvest was great but the corn harvest was disastrous. 

  • The product or result of any exertion or course of action; reward or consequences. 

  • The process of gathering the ripened crop; harvesting. 

  • The yield of harvesting, i.e., the gathered crops or fruits. 

verb
  • To win, achieve a gain. 

  • To be occupied bringing in a harvest 

  • To bring in a harvest; reap; glean. 

  • To kill for meat, slaughter. 

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