lixiviate vs trickle

lixiviate

verb
  • To separate (a substance) into soluble and insoluble components through percolation; to leach. 

adj
  • Impregnated with salts from wood ashes. 

  • Of or relating to lye or lixivium; of the quality of alkaline salts. 

noun
  • leachate 

trickle

verb
  • to pour a liquid in a very thin stream, or so that drops fall continuously. 

  • to flow in a very thin stream or drop continuously. 

  • To move or roll slowly. 

noun
  • A very thin river. 

  • A very thin flow; the act of trickling. 

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