forte vs saving grace

forte

noun
  • A strength or talent. 

  • A passage in music to be played loudly; a loud section of music. 

  • The strong part of a sword blade, close to the hilt. 

adj
  • Loud. Used as a dynamic directive in sheet music in its abbreviated form, "f.", to indicate raising the volume of the music. (Abbreviated in musical notation with an f, the Unicode character 1D191.) 

adv
  • Loudly. 

saving grace

noun
  • A redeeming quality or factor. 

  • God's grace or blessing, enabling sinners to attain salvation. 

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