lake vs plunge pool

lake

noun
  • A large, landlocked stretch of water or similar liquid. 

  • A small stream of running water; a channel for water; a drain. 

  • Play; sport; game; fun; glee. 

  • In dyeing and painting, an often fugitive crimson or vermillion pigment derived from an organic colorant (cochineal or madder, for example) and an inorganic, generally metallic mordant. 

  • A large amount of liquid; as, a wine lake. 

  • In the composition of colors for use in products intended for human consumption, made by extending on a substratum of alumina, a salt prepared from one of the certified water-soluble straight colors. 

verb
  • To leap, jump, exert oneself, play. 

  • To make lake-red. 

plunge pool

noun
  • A pool that is small in diameter, but deep, usually resulting from erosion by a natural force such as a waterfall or rapids. 

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