seep vs transudation

seep

noun
  • The seeping away of a liquid, etc. 

  • A seafloor vent. 

  • Moisture, liquid, gas, etc. that seeps out; a seepage. 

  • A small spring, pool, or other spot where liquid from the ground (e.g. water, petroleum or tar) has oozed to the surface; a place of seeping. 

verb
  • (of a crack etc.) To allow a liquid to pass through, to leak. 

  • To enter or penetrate slowly; to spread or diffuse. 

  • To diminish or wane away slowly. 

  • To ooze or pass slowly through pores or other small openings, and in overly small quantities; said of liquids, etc. 

transudation

noun
  • the process of passing through a membrane, pore or interstice 

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