griping vs stomachache

griping

noun
  • Pinching and spasmodic pain in the intestines; gripe. 

stomachache

noun
  • A pain in the abdomen, often caused by indigestion. (The pain is usually lower than the stomach and related to the intestines.) 

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