obscure vs shade

obscure

verb
  • To hide, put out of sight etc. 

  • To render obscure; to darken; to make dim; to keep in the dark; to hide; to make less visible, intelligible, legible, glorious, beautiful, or illustrious. 

adj
  • Dark, faint or indistinct. 

  • Difficult to understand. 

  • Not well-known. 

  • Hidden, out of sight or inconspicuous. 

  • Unknown or uncertain; unclear. 

shade

verb
  • To shield oneself from light. 

  • To shield (someone or something) from light. 

  • To reduce (a window) so that only its title bar is visible. 

  • To alter slightly. 

  • To move slightly from one's normal fielding position. 

  • To vary or approach something slightly, particularly in color. 

  • To darken, particularly in drawing. 

  • To surpass by a narrow margin. 

  • To throw shade, to subtly insult someone. 

noun
  • Something that blocks light, particularly in a window. 

  • A variety of a colour/color, in particular one obtained by adding black (compare tint). 

  • An aspect that is reminiscent of something. 

  • A very small degree of a quantity, or variety of meaning 

  • A ghost or specter; a spirit. 

  • A subtle variation in a concept. 

  • A postage stamp showing an obvious difference in colour/color to the original printing and needing a separate catalogue/catalog entry. 

  • Subtle insults. 

  • A candle-shade. 

  • A cover around or above a light bulb, a lampshade. 

  • Darkness where light, particularly sunlight, is blocked. 

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