bogger vs portapotty

bogger

noun
  • A lavatory: a room for urination and defecation. 

  • Someone associated with or who works in a bog. 

  • A dare, a task that children challenge each other to complete. 

  • Someone of the goth, skate, punk, or emo subculture. 

  • A machine which shovels up and carries ore and/or rock in an underground mine 

  • Someone who works to shovel ore or waste rock underground. 

  • Synonym of Boglander: an Irishman, now (Ireland, derogatory) a yokel, an Irishman from the countryside or (sometimes) from anywhere other than Dublin and the Pale. 

  • A man who catches nippers (snapping prawns). 

portapotty

noun
  • A portable restroom. 

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