beetroot vs irrigate

beetroot

verb
  • To turn a bright red or purple colour. 

noun
  • A normally deep-red-coloured root vegetable usually cooked or pickled before eating; Synonym of beet. 

  • The edible part of the root of a beet plant, raw or prepared. 

irrigate

verb
  • To clean (a wound) with a fluid. 

  • To supply (farmland) with water, by building ditches, pipes, etc. 

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