drainage vs outburst

drainage

noun
  • A system of drains. 

  • A downward wind. 

  • A natural or artificial means for the removal of fluids from a given area by its draining away. 

outburst

noun
  • a sudden, often violent expression of emotion or activity. 

verb
  • To burst out. 

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