filter vs trickle

filter

verb
  • To move slowly or gradually; to come or go a few at a time. 

  • To sort, sift, or isolate. 

  • To pass through a filter or to act as though passing through a filter. 

  • To diffuse; to cause to be less concentrated or focused. 

  • To ride a motorcycle between lanes on a road 

noun
  • self-restraint in speech. 

  • A device which separates a suspended, dissolved, or particulate matter from a fluid, solution, or other substance; any device that separates one substance from another. 

  • A non-empty upper set (of a partially ordered set) which is closed under binary infima (a.k.a. meets). 

  • Any item, mechanism, device or procedure that acts to separate or isolate. 

  • A translucent object placed in the light path of a camera to remove certain wavelengths (colors), or a computer program that simulates such an effect. 

  • Electronics or software that separates unwanted signals (for example noise) from wanted signals or that attenuates selected frequencies. 

trickle

verb
  • To move or roll slowly. 

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

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

noun
  • A very thin river. 

  • A very thin flow; the act of trickling. 

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