running shoe vs trainer

running shoe

noun
  • One of a pair of running shoes 

trainer

noun
  • A running shoe or sneaker. 

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

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