flop vs porpoise

flop

verb
  • To strike about with something broad and flat, as a fish with its tail, or a bird with its wings; to rise and fall; to flap. 

  • To pretend to be fouled in sports, such as basketball, hockey (the same as to dive in soccer) 

  • To stay, sleep or live in a place. 

  • To fall heavily due to lack of energy. 

  • To have (a hand) using the community cards dealt on the flop. 

  • To cause to drop heavily. 

  • To fail completely; not to be successful at all (of a movie, play, book, song etc.). 

  • To flip; to reverse (an image). 

noun
  • The first three cards turned face-up by the dealer in a community card poker game. 

  • A ponded package of dung, as in a cow-flop. 

  • An incident of a certain type of fall; a plopping down. 

  • A flophouse. 

  • A complete failure, especially in the entertainment industry. 

  • One floating-point operation per second, a unit of measure of processor speed. 

adv
  • With a flopping sound. 

  • Right, squarely, flat-out. 

intj
  • Indicating the sound of something flopping. 

porpoise

verb
  • Said of an aircraft: to make a series of plunges when taking off or landing; or of a watercraft: to successively plunge up and down in the water. 

  • Said of an air-breathing aquatic animal such as a porpoise or penguin: To repeatedly jump out of the water to take a breath and dive back in a continuous motion. 

noun
  • Any small dolphin. 

  • A small cetacean of the family Phocoenidae, related to dolphins and whales. 

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