bar chart vs ground plan

bar chart

noun
  • A graph in the form of boxes of different heights, with each box representing a different value or category of data, and the heights representing frequencies. 

ground plan

noun
  • A diagram showing set layout. 

  • Framework or pattern. 

  • Hypothetical ancestor of a clade. 

  • Floorplan. 

How often have the words bar chart and ground plan occurred in a corpus of books? (source: Google Ngram Viewer )