cinch vs sea lion

cinch

noun
  • A simple saddle girth used in Mexico. 

  • Something that is very easy to do. 

  • A firm hold. 

  • A variety of auction pitch in which a draw to improve the hand is added, and the five of trumps (called "right Pedro") and the five of the same colour (called "left Pedro", and ranking between the five and the four of trumps) are each worth five. Fifty-one points make a game. 

  • Something that is obvious or certain to occur; a sure thing. 

verb
  • To tighten down. 

  • To bring to certain conclusion. 

  • In the game of cinch, to protect (a trick) by playing a higher trump than the five. 

sea lion

noun
  • A cow or bull transported by steamer from the ports of Texas. 

  • A steamer transporting cattle from the ports of Texas. 

  • A monster consisting of the upper part of a lion combined with the tail of a fish. 

  • A marine mammal of any of several genera in the family Otariidae (the eared seals). 

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