mail vs pannier

mail

noun
  • A trunk, box, or bag, in which clothing, etc., may be carried. 

  • The postal service or system in general. 

  • The letters, parcels, etc. delivered to a particular address or person. 

  • The material conveyed by the postal service. 

  • Tax. 

  • A bag containing letters to be delivered by post. 

  • Electronic mail, e-mail: a computer network–based service for sending, storing, and forwarding electronic messages. 

  • A contrivance of interlinked rings, for rubbing off the loose hemp on lines and white cordage. 

  • A bag or wallet. 

  • A monetary payment or tribute. 

  • Rent. 

  • Any hard protective covering of an animal, as the scales and plates of reptiles, shell of a lobster, etc. 

  • Armour consisting of metal rings or plates linked together. 

  • An old French coin worth half a denier. 

verb
  • To send (a letter, parcel, etc.) through the mail. 

  • To arm with mail. 

  • To contact (a person) by electronic mail. 

  • To pinion. 

  • To send by electronic mail. 

pannier

noun
  • A large basket or bag fastened, usually in pairs, to the back of a bicycle or pack animal, or carried in pairs over the shoulders. 

  • One of a pair of hoops used to expand the volume of a woman's skirt to either side. 

  • A breadbasket. 

  • A piece of basketwork for protecting archers, or, filled with gravel or sand, for forming and protecting embankments, etc. 

  • A decorative basket for the display of flowers or fruits. 

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