hatch vs knockdown

hatch

noun
  • An opening through the deck of a ship or submarine 

  • A group of birds that emerged from eggs at a specified time. 

  • A trapdoor. 

  • An opening into, or in search of, a mine. 

  • The act of hatching. 

  • A gullet. 

  • A birth, the birth records (in the newspaper). 

  • A floodgate; a sluice gate. 

  • A horizontal door in a floor or ceiling. 

  • Development; disclosure; discovery. 

  • A bedstead. 

  • A small door in large mechanical structures and vehicles such as aircraft and spacecraft often provided for access for maintenance. 

  • A frame or weir in a river, for catching fish. 

  • An opening in a wall at window height for the purpose of serving food or other items. A pass through. 

  • The phenomenon, lasting 1–2 days, of large clouds of mayflies appearing in one location to mate, having reached maturity. 

verb
  • To shade an area of (a drawing, diagram, etc.) with fine parallel lines, or with lines which cross each other (cross-hatch). 

  • To devise. 

  • To emerge from an egg. 

  • To break open when a young animal emerges from it. 

  • To close with a hatch or hatches. 

  • To incubate eggs; to cause to hatch. 

knockdown

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

  • 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. 

verb
  • To employ the knockdown technique 

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. 

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