bowler vs closer

bowler

noun
  • The pitcher. 

  • A bowler hat; a round black hat formerly popular among British businessmen. 

  • One who engages in the sport of bowling. 

  • A player selected mainly for his bowling ability. 

  • The player currently bowling. 

closer

noun
  • A relief pitcher who specializes in getting the last three outs of the game. See Wikipedia:closer (baseball) 

  • Someone or something that closes. 

  • Someone or something that concludes. 

  • Synonym of close (“the point at the end of a sales pitch when the consumer is asked to buy”) 

  • The last stone in a horizontal course, if smaller than the others; a piece of brick finishing a course. 

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