bumper vs wheel arch

bumper

noun
  • Parts at the front and back of a vehicle which are meant to absorb the impact of a collision; fender. 

  • Any mechanical device used to absorb an impact, soften a collision, or protect against impact. 

  • A bouncer. 

  • A short ditty or jingle used to separate a show from the advertisements. 

  • A side wall of a pool table. 

  • Someone or something that bumps. 

  • Anything large or successful. 

  • An extra musician (not notated in the score) who assists the principal French horn by playing less-exposed passages, so that the principal can save their 'lip' for difficult solos. Also applied to other sections of the orchestra. 

  • A woman's posterior, particularly one that is considered full and desirable. 

  • An object on a playfield that applies force to the pinball when hit, often giving a minor increase in score. 

  • A cigarette butt. 

  • A cylindrical object used (as a substitute for birds) to train dogs to retrieve. 

adj
  • Large; (as if) filled to the bumpers at the top of a silo. 

wheel arch

noun
  • The shaped part of the bodywork of a car or other vehicle that allows the wheel to be accessed, and in the case of front wheels, enable them to be steered. 

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