percolate vs transfuse

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. 

transfuse

verb
  • To diffuse or permeate through something. 

  • To pour liquid from one vessel into another. 

  • To administer a transfusion of. 

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