congeal vs fasten

congeal

verb
  • To become congealed, solidify. 

  • To change from a liquid to solid state, perhaps due to cold; called to freeze in nontechnical usage. 

  • To coagulate, make curdled or semi-solid such as gel or jelly. 

  • To make rigid or immobile. 

fasten

verb
  • To cause to take close effect; to make to tell; to land. 

  • To attach or connect in a secure manner. 

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