pure vs rat

pure

verb
  • to hit (the ball) completely cleanly and accurately 

adj
  • Of a single, simple sound or tone; said of some vowels and the unaspirated consonants. 

  • Free of foreign material or pollutants. 

  • Free of flaws or imperfections; unsullied. 

  • Done for its own sake instead of serving another branch of science. 

  • Mere; that and that only. 

  • Without harmonics or overtones; not harsh or discordant. 

  • A lot of. 

  • Free of immoral behavior or qualities; clean. 

noun
  • One who, or that which, is pure. 

adv
  • to a great extent or degree; extremely; exceedingly. 

rat

verb
  • To scratch or score. 

  • To kill rats. 

  • Damn, drat, blast; used in oaths. 

  • To betray a person or party, especially by telling their secret to an authority or an enemy; to turn someone in. 

  • To work as a scab, going against trade union policies. 

noun
  • Vagina. 

  • Any of the numerous members of several rodent families (e.g. voles and mice) that resemble true rats in appearance, usually having a pointy snout, a long, bare tail, and body length greater than about 12 cm, or 5 inches. 

  • A scratch or a score. 

  • A roll of material used to puff out the hair, which is turned over it. 

  • A scab: a worker who acts against trade union policies. 

  • A person who routinely spends time at a particular location. 

  • A ration. 

  • A person who is known for betrayal; a scoundrel; a quisling. 

  • A medium-sized rodent belonging to the genus Rattus. 

  • A place in the sea with rapid currents and crags where a ship is likely to be torn apart in stormy weather. 

  • A wad of shed hair used as part of a hairstyle. 

  • An informant or snitch. 

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