addle vs obscure

addle

adj
  • Unfruitful or confused; muddled. 

  • Having lost the power of development, and become rotten; putrid. 

verb
  • To cause fertilised eggs to lose viability, by killing the developing embryo within through shaking, piercing, freezing or oiling, without breaking the shell. 

  • To make addle; to grow addle; to muddle 

  • To earn, earn by labor; earn money or one's living. 

  • To thrive or grow; to ripen. 

noun
  • A foolish or dull-witted fellow. 

obscure

adj
  • Unknown or uncertain; unclear. 

  • Dark, faint or indistinct. 

  • Difficult to understand. 

  • Not well-known. 

  • Hidden, out of sight or inconspicuous. 

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. 

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