benefit vs vitiate

benefit

verb
  • To be or to provide a benefit to. 

  • To receive a benefit (from); to be a beneficiary. 

noun
  • An advantage; help or aid from something. 

  • An event, such as a theatrical performance, given to raise funds for some cause. 

  • A payment made in accordance with an insurance policy or a public assistance scheme. 

  • Intended audience (as for the benefit of). 

vitiate

verb
  • To debase or morally corrupt. 

  • To make something ineffective, to invalidate. 

  • To spoil, make faulty; to reduce the value, quality, or effectiveness of something. 

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