ooze vs scum

ooze

verb
  • To give off a strong sense of (something); to exude. 

  • To be secreted or slowly leak. 

noun
  • A piece of soft, wet, pliable ground. 

  • Tanning liquor, an aqueous extract of vegetable matter (tanbark, sumac, etc.) in a tanning vat used to tan leather. 

  • Soft mud, slime, or shells especially in the bed of a river or estuary. 

  • A pelagic marine sediment containing a significant amount of the microscopic remains of either calcareous or siliceous planktonic debris organisms. 

  • An oozing, gentle flowing, or seepage, as of water through sand or earth. 

scum

verb
  • To remove (something) as scum. 

  • To startscum or savescum. 

  • To remove the layer of scum from (a liquid etc.). 

  • To become covered with scum. 

noun
  • Semen. 

  • A layer of impurities that accumulates at the surface of a liquid (especially molten metal or water). 

  • A greenish water vegetation (such as algae), usually found floating on the surface of ponds 

  • A reprehensible person or persons. 

  • The topmost liquid layer of a cesspool or septic tank. 

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