fault-finding vs waspy

fault-finding

noun
  • The investigation and location of faults in machinery and equipment. 

waspy

adj
  • Waspish; irascible. 

  • Resembling or characteristic of a wasp; wasplike. 

  • Like a wasp (white Anglo-Saxon Protestant), a member of the dominant American upper-class culture. 

  • Infested with wasps. 

How often have the words fault-finding and waspy occurred in a corpus of books? (source: Google Ngram Viewer )