dissipate vs ulcer

dissipate

verb
  • To drive away, disperse. 

  • To use up or waste; squander. 

  • To vanish by dispersion. 

  • To cause energy to be lost through its conversion to heat. 

ulcer

noun
  • Peptic ulcer. 

  • Anything that festers and corrupts like an open sore; a vice in character. 

  • An open sore of the skin, eyes or mucous membrane, often caused by an initial abrasion and generally maintained by an inflammation and/or an infection. 

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