frag vs scrag

frag

verb
  • To kill. 

  • To hit with the explosion of a fragmentation grenade. 

  • To deliberately kill (one's superior officer) with a fragmentation grenade. 

  • I fragged him but he fell off the ledge afterwards. 

noun
  • A successful kill in a deathmatch game. 

  • A fragmentation grenade. 

scrag

verb
  • To destroy or kill. 

  • To harass; to manhandle. 

noun
  • A rough or unkempt woman. 

  • A ragged, stunted tree or branch. 

  • A scrog. 

  • A chav or ned; a stereotypically loud and aggressive person of lower social class. 

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