assist vs stead

assist

noun
  • A helpful action or an act of giving. 

  • A decisive pass made to the goal scorer 

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

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. 

stead

noun
  • An emotional or circumstantial "place" having specified advantages, qualities etc. (now only in phrases). 

  • The position or function (of someone or something), as taken on by a successor. 

  • One's partner in a romantic relationship. 

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