cork vs knockdown

cork

noun
  • An aerialist maneuver involving a rotation where the rider goes heels over head, with the board overhead. 

  • The cork oak, Quercus suber. 

  • The bark of the cork oak, which is very light and porous and used for making bottle stoppers, flotation devices, and insulation material. 

  • An angling float, also traditionally made of oak cork. 

  • A bottle stopper made from this or any other material. 

  • The dead protective tissue between the bark and cambium in woody plants, with suberin deposits making it impervious to gasses and water. 

adj
  • Having the property of a head over heels rotation. 

verb
  • To seal or stop up, especially with a cork stopper. 

  • To leave the cork in a bottle after attempting to uncork it. 

  • To perform such a maneuver. 

  • To fill with cork. 

  • To position one's drift net just outside of another person's net, thereby intercepting and catching all the fish that would have gone into that person's net. 

  • To tamper with (a bat) by drilling out part of the head and filling the cavity with cork or similar light, compressible material. 

  • To blacken (as) with a burnt cork. 

  • To injure through a blow; to induce a haematoma. 

knockdown

noun
  • a short pass played downwards, for example from the head onto someone's feet. 

  • The condition of a sailboat being pushed abruptly to horizontal, with the mast parallel to the water surface. 

  • An act of knocking down or the condition of being knocked down. 

  • A shelter erected for use as a temporary dressing room. 

  • A collection of parts required to assemble a product, typically manufactured in one region and exported elsewhere for assembly. 

  • A genetically modified organism that carries one or more genes in its chromosomes that have been made less active or had their expression reduced. 

  • The use of a reagent such as an oligonucleotide with sequence complementary to an active gene or its mRNA transcript, to interfere with the expression of said gene. 

  • An overwhelming blow. 

adj
  • To be formed into a head by upsetting in fastening. 

  • reduced in price, originally to a price below which an article would not be sold by the auctioneer 

  • powerful enough to overwhelm or knock down 

  • Capable of being taken apart for packing or removal. 

verb
  • To employ the knockdown technique 

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