coloring vs highlights

coloring

noun
  • A disguise or discoloration. 

  • The appearance as to color. 

  • Any substance used to give color. 

  • An assignment of a color to each vertex of a graph such that no two vertices connected by an edge are given the same color. 

  • An act or process which applies color. 

highlights

noun
  • Summary of an event, such as a sporting event, focussing on the most entertaining or consequential aspects; compilation of each highlight of that event 

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