sough vs thunder

sough

verb
  • To make a soft rustling or murmuring sound. 

  • To drain. 

noun
  • A gentle breeze; a waft; a breath. 

  • A murmuring sound; rushing, rustling, or whistling sound. 

  • A (deep) sigh. 

  • A small drain; an adit. 

thunder

verb
  • To make a noise like thunder. 

  • To say (something) with a loud, threatening voice. 

  • To produce thunder; to sound, rattle, or roar, as a discharge of atmospheric electricity. 

  • To (make something) move very fast (with loud noise). 

  • To produce something with incredible power. 

noun
  • The spotlight. 

  • An alarming or startling threat or denunciation. 

  • The loud rumbling, cracking, or crashing sound caused by expansion of rapidly heated air around a lightning bolt. 

  • A deep, rumbling noise resembling thunder. 

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