boondock vs redline

boondock

verb
  • To stay in a self-contained recreational vehicle without connections to water, electricity, or sewer services, especially in a remote location. 

  • To camp in a dry brushy location. 

  • To strike a squopped wink and send it flying far away. 

noun
  • A brushy, rural area or location. 

  • A shot that strikes a squopped wink and sends it flying far away. 

redline

verb
  • To deny or complicate access to services (such as banking, insurance, or healthcare) to residents in specific, often racially determined, areas. 

  • To mark a drawing or document for correction or modification. 

  • To run an internal combustion engine to its maximum or maximum recommended speed. 

  • To achieve audio levels that will cause clipping (indicated by red in an audio meter). 

  • To operate a device at one or more redlines. 

noun
  • A drawing, document, etc. that has been marked for correction or modification. 

  • The maximum speed, temperature, pressure, etc., at which a device (such as the engine in a car, aircraft, etc.) is designed to operate. 

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