noggin vs percolate

noggin

noun
  • A small mug, cup or ladle; the contents of such a container. 

  • The head. 

  • A signalling molecule involved in embryo development, producing large heads at high concentrations. 

  • A small measure of spirits equivalent to a gill. 

percolate

noun
  • A liquid that has been percolated. 

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

  • To make (coffee) in a percolator. 

  • To drain or seep through a porous substance. 

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

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