germaneness vs relevancy

germaneness

noun
  • The property or condition of being germane. 

relevancy

noun
  • A relevant thing. 

  • The degree to which a thing is relevant; relevance, applicability. 

  • Sufficiency (of a statement, claim etc.) to carry weight in law; legal pertinence. 

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