dabble vs light water

dabble

noun
  • A spattering or sprinkling of a liquid. 

  • An act of splashing in soft mud, water, etc. 

  • An act of participation in an activity in a casual or superficial way. 

verb
  • To feed without diving, by submerging the head and neck underwater to seek food, often also tipping up the tail straight upwards above the water. 

  • To make slightly wet or soiled by spattering or sprinkling a liquid (such as water, mud, or paint) on it; to bedabble. 

  • To participate or have an interest in an activity in a casual or superficial way. 

  • To cause splashing by moving a body part like a bill or limb in soft mud, water, etc., often playfully; to play in shallow water; to paddle. 

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 dabble and light water occurred in a corpus of books? (source: Google Ngram Viewer )