angst vs tummyache

angst

noun
  • Emotional turmoil; painful sadness. 

  • A feeling of acute but vague anxiety or apprehension often accompanied by depression, especially philosophical anxiety. 

verb
  • To suffer angst; to fret. 

tummyache

noun
  • Any pain in the stomach or abdomen. 

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