sidearm vs skean

sidearm

noun
  • A personal weapon, such as a handgun or sword, carried on the hip in a belt, sheath, holster, etc., for rapid access. 

adv
  • With one's arm roughly parallel to the ground. 

verb
  • To throw a ball with one's arm roughly parallel to the ground. 

skean

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

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