disallowance vs disuse

disallowance

noun
  • The action of not allowing, or of withdrawing allowance. 

  • A power a higher level authority has to disallow particular legislation of the lower level jurisdiction; such as a federal government disallowing state/provincial legislation, or the crown disallowing federal legislation. 

disuse

noun
  • The state of not being used; neglect. 

verb
  • To cease the use of. 

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