conch vs snail

conch

noun
  • The shell of this sea animal. 

  • A marine gastropod of the family Strombidae which lives in its own spiral shell. 

  • A musical instrument made from a large spiral seashell, somewhat like a trumpet. 

  • Synonym of concher (“machine used to refine the flavour and texture of chocolate”) 

  • The semidome of an apse, or the apse itself. 

verb
  • To refine the flavour and texture of chocolate by warming and grinding, either in a traditional concher, or between rollers. 

  • To play a conch seashell as a musical instrument, by blowing through a hole made close to the origin of the spiral. 

snail

noun
  • The pod of the snail clover. 

  • A spiral cam, or a flat piece of metal of spirally curved outline, used for giving motion to, or changing the position of, another part, as the hammer tail of a striking clock. 

  • A tortoise or testudo; a movable roof or shed to protect besiegers. 

  • A slow person; a sluggard. 

  • Any of very many animals (either hermaphroditic or nonhermaphroditic), of the class Gastropoda, having a coiled shell. 

  • A locomotive with a prime mover but no traction motors, used to provide extra electrical power to another locomotive. 

verb
  • To move or travel very slowly. 

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