assist vs indulge

assist

verb
  • To help. 

  • To make a pass that leads directly towards scoring. 

  • To help compensate for what is missing with the help of a medical technique or therapy. 

noun
  • A decisive pass made to the goal scorer 

  • A helpful action or an act of giving. 

  • A defensive play, allowing a teammate to record a putout. 

indulge

verb
  • To satisfy the wishes or whims of. 

  • To grant an extension to the deadline of a payment. 

  • To give way to (a habit or temptation); to not oppose or restrain. 

  • To grant as by favour; to bestow in concession, or in compliance with a wish or request. 

  • To yield to a temptation or desire. 

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