calligraphy vs penning

calligraphy

noun
  • The art or practice of writing letters and words in a decorative style; the letters and words so written. 

  • A document written in decorative style. 

  • Any such style of decorative writing. 

penning

noun
  • Writing; literary composition. 

  • An old currency unit, the Swedish penning. 

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