gush vs waterfall

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. 

waterfall

noun
  • A waterfall-like outpouring of liquid, smoke, etc. 

  • A flow of water over the edge of a cliff. 

  • Waterfall model 

  • The action of drinking from a vessel without touching it with the lips, considered more sanitary for a shared vessel. 

verb
  • To drink (something) from a container by pouring it from a height so as not to touch one's lips to the rim. 

  • To fall like a waterfall. 

  • Synonym of recycle 

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