percolate vs phlebotomize

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. 

phlebotomize

verb
  • To perform a phlebotomy on (a person): to open a vein of (a person) to withdraw or let blood. 

  • To perform a phlebotomy on (a vein): to open (a vein) to withdraw or let blood. 

  • To perform a phlebotomy; to open a vein to withdraw or let blood. 

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