woodblock vs xylograph

woodblock

noun
  • A wooden block used as a printing form. 

  • The emergency issue of the Cape triangles, printed in 1861. 

  • A woodcut. 

  • A percussion instrument consisting of a hollow block of wood struck with a drumstick. 

xylograph

noun
  • An engraving in wood or woodcut, especially one used in printing predating the Western tradition (14th c.). 

  • A print taken from such an engraving. 

verb
  • To make a print from an engraving in wood. 

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