block out vs shade

block out

verb
  • to cover something, so as to make it impossible to see. 

  • to prevent from entering or penetrating. 

  • to prevent (a thought) from entering one's mind. 

  • to begin to reduce to shape; to mark out roughly; to lay out. 

shade

verb
  • 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. 

  • To shield oneself from light. 

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 block out and shade occurred in a corpus of books? (source: Google Ngram Viewer )