coarse vs cobweb

coarse

adj
  • Composed of large particles. 

  • Lacking refinement, taste or delicacy. 

  • Of inferior quality. 

  • With a rough texture; not smooth. 

cobweb

noun
  • A spiderweb, or the remains of one, especially an asymmetrical one that is woven with an irregular pattern of threads. 

  • One of its filaments; gossamer. 

  • An intricate plot to catch the unwary. 

  • Something thin and unsubstantial, or flimsy and worthless; valueless remainder. 

  • fuzzy inexact memories. 

  • A web page that either has not been updated for a long time, or that is rarely visited. 

  • The European spotted flycatcher, Muscicapa striata. 

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