cubic vs rectangular

cubic

adj
  • Having three equal axes and all angles 90°. 

  • Used in the names of units of volume formed by multiplying a unit of length by itself twice. 

  • Of a class of polynomial of the form ax³+bx²+cx+d 

noun
  • A cubic curve. 

rectangular

adj
  • Having axes that meet each other with right angles. 

  • Having a shape like a rectangle. 

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