exudate vs trickle

exudate

noun
  • A fluid that has exuded from somewhere; especially one that has exuded from a pore of an animal or plant. 

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 exudate and trickle occurred in a corpus of books? (source: Google Ngram Viewer )