lake vs light water

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. 

light water

noun
  • Foam formed by water and a fluorocarbon surfactant, used in firefighting because it floats on flammable liquids lighter than water. 

  • Water in its standard form of H₂O, containing two protium hydrogen atoms, as opposed to heavy water. 

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