coda vs rider

coda

noun
  • A passage that brings a movement or piece to a conclusion through prolongation. 

  • The optional final part of a syllable, placed after its nucleus, and usually composed of one or more consonants. 

  • In seismograms, the gradual return to baseline after a seismic event. The length of the coda can be used to estimate event magnitude, and the shape sometimes reveals details of subsurface structures. 

  • A conclusion (of a statement or event, for example), final portion, tail end. 

rider

noun
  • A piece, such as the rook or bishop, which moves any distance in one direction, as long as no other piece is in the way. 

  • An amendment or addition to an entertainer's performance contract, often covering a performer's equipment or food, drinks, and general comfort requirements. 

  • A small, sliding piece of thin metal on a balance, used to determine small weights. 

  • Someone riding in a vehicle; a passenger on public transport. 

  • A supplementary question, now especially in mathematics. 

  • An interior rib occasionally fixed in a ship's hold, reaching from the keelson to the beams of the lower deck, to strengthen the frame. 

  • The first Lenormand card, also known as either the horseman or the cavalier. 

  • The second tier of casks in a vessel's hold. 

  • A supplementary clause added to a document after drafting, especially to a bill under the consideration of a legislature. 

  • Someone who rides a horse or (later) a bicycle, motorcycle etc. 

  • An old Dutch gold coin with the figure of a man on horseback stamped upon it. 

  • A knight, or other mounted warrior. 

  • An additional matter or question arising in corollary; a qualification. 

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