benefit vs impede

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). 

impede

verb
  • To get in the way of; to hinder. 

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