balcony vs bleacher

balcony

noun
  • An accessible structure overlooking a stage or the like. 

  • An accessible structure extending from a building, especially outside a window. 

bleacher

noun
  • A stand of tiered planks used as seating for spectators, often outdoors. 

  • One who, or that which, bleaches. 

  • The tiered seating provided for the audience at a television filming. 

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