immerge vs percolate

immerge

verb
  • To plunge into, under, or within anything, especially a fluid; to dip; to immerse. 

  • To disappear by entering into any medium, as a star into the light of the sun. 

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. 

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