gallet vs inscription

gallet

noun
  • A splinter of stone inserted into the wet mortar of masonry. 

verb
  • To use this masonry technique. 

inscription

noun
  • Text carved on a wall or plaque, such as a memorial or gravestone. 

  • Words written in the front of a book as a dedication. 

  • The text on a coin. 

  • The act of inscribing. 

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