breadth vs tract

breadth

noun
  • The extent or measure of how broad or wide something is. 

  • A style in painting in which details are strictly subordinated to the harmony of the whole composition. 

  • A piece of fabric of standard width. 

  • The length of the longest path between two vertices in a graph. 

  • Scope or range, especially of knowledge or skill. 

tract

noun
  • An area or expanse. 

  • Part of the proper of the liturgical celebration of the Eucharist for many Christian denominations, used instead of the alleluia during Lenten or pre-Lenten seasons, in a Requiem Mass, and on a few other penitential occasions. 

  • A series of connected body organs, such as the digestive tract. 

  • A commentator's view or perspective on a subject. 

  • Continued or protracted duration, length, extent 

  • A brief treatise or discourse on a subject. 

  • A small booklet such as a pamphlet, often for promotional or informational uses. 

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