quelling vs voidance

quelling

noun
  • The act by which something is quelled. 

adj
  • causing something to quell or be quelled 

voidance

noun
  • The act of voiding, of defecating or removing. 

  • The quality of being void. 

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