cylindrical vs rectangular

cylindrical

adj
  • Shaped like a cylinder. 

  • Describing a map projection in which meridians are mapped onto vertical lines and parallels of latitude onto horizontal lines. 

rectangular

adj
  • Having a shape like a rectangle. 

  • Having axes that meet each other with right angles. 

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