mudguard vs tailgate

mudguard

noun
  • A cover over the wheels of a vehicle, or a flap behind that wheel, to prevent water and mud being projected. 

tailgate

noun
  • A hinged board or hatch at the rear of a vehicle that can be lowered for loading and unloading. 

  • Either of the downstream gates in a canal lock. 

  • The hinged rear door of a hatchback. 

verb
  • To privately purchase or sell a security immediately after trading in the same security for a client. 

  • To follow another person through access control on their access, rather than on one’s own credentials, especially when entering a door controlled by a card reader. 

  • To drive dangerously close behind another vehicle. 

  • To have a tailgate party. 

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