balcony vs rowhome

balcony

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

  • An accessible structure overlooking a stage or the like. 

rowhome

noun
  • One of a row of houses situated side by side and sharing a common wall. 

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