precipitation vs procrastination

precipitation

noun
  • Any or all of the forms of water particles, whether liquid or solid, that fall from the upper atmosphere (e.g., rain, hail, snow or sleet). It is a major class of hydrometeor, but it is distinguished from cloud, fog, dew, rime, frost, etc., in that it must fall. It is distinguished from cloud and virga in that it must reach the ground. 

  • A hurried headlong fall. 

  • Unwise or rash rapidity; sudden haste. 

  • A reaction that leads to the formation of a heavier solid in a lighter liquid; the precipitate so formed at the bottom of the container. 

procrastination

noun
  • The act of postponing, delaying or putting off, especially habitually or intentionally. 

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