dark vs knockdown

dark

adj
  • Conducive to hopelessness; depressing or bleak. 

  • Off the air; not transmitting. 

  • Ambiguously or unclearly expressed: enigmatic, esoteric, mysterious, obscure, undefined. 

  • Without moral or spiritual light; sinister, malign. 

  • With emphasis placed on the unpleasant aspects of life; said of a work of fiction, a work of nonfiction presented in narrative form, or a portion of either. 

  • Deprived of sight; blind. 

  • Transmitting, reflecting, or receiving inadequate light to render timely discernment or comprehension: caliginous, darkling, dim, gloomy, lightless, sombre. 

  • Having racing capability not widely known. 

  • Marked by or conducted with secrecy: hidden, secret; clandestine, surreptitious. 

  • Lacking progress in science or the arts. 

  • Extinguished. 

  • Dull or deeper in hue; not bright or light. 

  • Having an absolute or (more often) relative lack of light. 

  • Extremely sad, depressing, or somber, typically due to, or marked by, a tragic or undesirable event. 

noun
  • A complete or (more often) partial absence of light. 

  • Ignorance. 

  • Nightfall. 

  • A dark shade or dark passage in a painting, engraving, etc. 

verb
  • To remain in the dark, lurk, lie hidden or concealed. 

  • To make dark, darken; to obscure. 

  • To grow or become dark, darken. 

knockdown

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 

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. 

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