condensate vs rainfall

condensate

noun
  • A liquid that is the product of condensation of a gas, i.e. of steam. 

  • Any of various condensed quantum states. 

  • The product of a condensation reaction. 

verb
  • To condense. 

rainfall

noun
  • The occurrence of liquid precipitation, the fall of rain. 

  • the amount of rain that falls on a single occasion 

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