diagrammatic vs pictorial

diagrammatic

adj
  • Of or pertaining to a diagram or to diagrammatics. 

  • In the form of a diagram. 

pictorial

adj
  • Of, relating to, composed of, or illustrated by pictures. 

  • Described or otherwise represented as if in a picture; graphic or vivid. 

  • Stylistically similar to a painting, especially following the conventions of pictorialism. 

noun
  • A newspaper or magazine with many pictures, or section thereof. 

  • A stamp featuring a vignette of local scenery or culture. 

  • An article primarily featuring many photographs, or simply a collection of photographs. 

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