harmless vs upsetting

harmless

adj
  • Incapable of causing harm or danger; safe. 

  • Not intended to harm; inoffensive. 

upsetting

noun
  • The action of the verb upset. 

adj
  • Causing upset; distressing. 

  • Conceited; presumptuous. 

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