harvest vs till

harvest

verb
  • To be occupied bringing in a harvest 

  • To win, achieve a gain. 

  • To bring in a harvest; reap; glean. 

  • To kill for meat, slaughter. 

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

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

till

verb
  • To work or cultivate or plough (soil); to prepare for growing vegetation and crops. 

  • To develop so as to improve or prepare for usage; to cultivate (said of knowledge, virtue, mind etc.). 

  • To cultivate soil. 

noun
  • A vetch; a tare. 

  • A cash register. 

  • glacial drift consisting of a mixture of clay, sand, pebbles and boulders 

  • manure or other material used to fertilize land 

  • A removable box within a cash register containing the money. 

  • The contents of a cash register, for example at the beginning or end of the day or of a cashier's shift. 

prep
  • Until; to, up to; as late as (a given time). 

  • To make it possible that. 

conj
  • Until, until the time that. 

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