percolate vs run off

percolate

verb
  • To drain or seep through a porous substance. 

  • To pass a liquid through a porous substance; to filter. 

  • To make (coffee) in a percolator. 

  • To spread slowly or gradually; to slowly become noticed or realised. 

noun
  • A liquid that has been percolated. 

run off

verb
  • To pour or spill off or over. 

  • To operate by a particular energy or fuel source. 

  • To flee or depart quickly. 

  • to have diarrhea 

  • To make photocopies, or print. 

  • To write something quickly. 

  • To cause to flow away. 

  • To chase someone away. 

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