filtrate vs trickle

filtrate

noun
  • The liquid or solution that has passed through a filter, and which has been separated from the filtride / filtrand 

verb
  • To filter. 

trickle

noun
  • A very thin flow; the act of trickling. 

  • A very thin river. 

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

  • To move or roll slowly. 

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

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