attempt vs scavenging

attempt

noun
  • The action of trying at something. 

  • An assault or attack, especially an assassination attempt. 

verb
  • To try. 

scavenging

noun
  • The act of searching through refuse for useful material. 

adj
  • That eats carrion 

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