adhesion vs allegiance

adhesion

noun
  • Persistent attachment or loyalty. 

  • An abnormal union of surface by the formation of new tissue resulting from an inflammatory process. 

  • The ability of a substance to stick to an unlike substance. 

  • An agreement to adhere. 

  • The binding of a cell to a surface or substrate. 

  • The frictional grip on a surface, of wheels, shoes etc. 

allegiance

noun
  • Loyalty to some cause, nation or ruler. 

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