knockdown vs sag

knockdown

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

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

  • 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. 

sag

noun
  • The state of sinking or bending; a droop. 

  • The difference in height or depth between the vertex and the rim of a curved surface, specifically used for optical elements such as a mirror or lens. 

  • The difference in elevation of a wire, cable, chain or rope suspended between two consecutive points. 

verb
  • To cause to bend or give way; to load. 

  • To wear one's trousers so that their top is well below the waist. 

  • To pull down someone else's pants. 

  • To loiter in walking; to idle along; to drag or droop heavily. 

  • To sink, in the middle, by its weight or under applied pressure, below a horizontal line or plane. 

  • To lose firmness, elasticity, vigor, or a thriving state; to sink; to droop; to flag; to bend; to yield, as the mind or spirits, under the pressure of care, trouble, doubt, or the like; to be unsettled or unbalanced. 

  • To lean, give way, or settle from a vertical position. 

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