fortitude vs oomph

fortitude

noun
  • Mental or emotional strength that enables courage in the face of adversity. 

oomph

noun
  • Strength, power, passion or effectiveness; clout. 

  • A bassy grunting or thudding sound. 

  • Sex appeal. 

verb
  • To produce a bassy grunting or thudding sound. 

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