shatter vs spalt

shatter

verb
  • To violently break something into pieces. 

  • To smash, or break into tiny pieces. 

  • To dispirit or emotionally defeat. 

  • Of seeds: to be dispersed upon ripening. 

  • To destroy or disable something. 

noun
  • A (pine) needle. 

  • A form of concentrated cannabis. 

spalt

verb
  • To break off pieces, or have them broken off, especially with an axe etc; to splinter. 

noun
  • Spelter. 

adj
  • Heedless; clumsy; pert; saucy. 

  • Brittle. 

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