advocate vs champion

advocate

verb
  • To engage in advocacy. 

  • To appeal from an inferior court to the Court of Session. 

  • To call a case before itself for decision. 

  • To encourage support for something. 

  • To plead in favour of; to defend by argument, before a tribunal or the public; to support, vindicate, or recommend publicly. 

noun
  • A person who supports others to make their voices heard, or ideally for them to speak up for themselves. 

  • A person who speaks in support of something, or someone. 

  • Someone whose job is to speak for someone's case in a court of law; a counsel. 

  • Anyone who argues the case of another; an intercessor. 

champion

verb
  • To promote, advocate, or act as a champion for (a cause, etc.). 

noun
  • Someone who fights for a cause or status. 

  • An ongoing winner in a game or contest. 

  • Someone who fights on another's behalf. 

  • A particularly notable member of a plant species, such as one of great size. 

  • Someone who is chosen to represent a group of people in a contest. 

adj
  • Acting as a champion; having defeated all one's competitors. 

  • Excellent; brilliant; superb; deserving of high praise. 

  • Excellent; beyond compare. 

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