beetroot vs fever

beetroot

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

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

verb
  • To turn a bright red or purple colour. 

fever

noun
  • A group of stingrays. 

  • A higher than normal body temperature of a person (or, generally, a mammal), usually caused by disease. 

  • A state of excitement or anxiety. 

  • Any of various diseases. 

verb
  • To become fevered. 

  • To put into a fever; to affect with fever. 

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