player vs trainer

player

noun
  • One who plays any game or sport. 

  • An electronic device that plays audio and/or video media. 

  • A mechanism that actuates a player piano or other automatic musical instrument. 

  • One who is playful; one without serious aims; an idler; a trifler. 

  • A gambler. 

  • A software application that plays audio and/or video media, such as a media player. 

  • A participant; one involved in something. 

  • An actor in a dramatic play. 

  • One who plays on a musical instrument. 

  • A gamer; a player of video games or similar. 

  • A person who plays the field rather than having a long-term sexual relationship. 

trainer

noun
  • A person responsible for treating injuries sustained by players during matches; a physiotherapist. 

  • A person who trains another; a coach. 

  • A patch for a video game that applies cheats. 

  • A running shoe or sneaker. 

  • A piece of indoor equipment allowing a bicycle to be ridden while stationary. 

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