precipitation vs wetness

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. 

wetness

noun
  • Moisture. 

  • Rainy or damp weather. 

  • The condition of being wet. 

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