assegai vs skean

assegai

noun
  • A slim hardwood spear or javelin with an iron tip, especially those used by Bantu peoples of Southern Africa. 

  • The tree species Curtisia dentata, the wood of which is traditionally used to make assegais. 

verb
  • To spear with an assegai. 

skean

noun
  • A double-edged, leaf-shaped, typically bronze dagger formerly used in Ireland and Scotland. 

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