drainage vs gush

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. 

gush

noun
  • A sudden rapid outflow. 

verb
  • To make an excessive display of enthusiasm, praise, or sentiment. 

  • To send (something) flowing forth suddenly in great volume. 

  • To ejaculate during orgasm. 

  • To flow forth suddenly, in great volume. 

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