site vs tract

site

noun
  • The place where anything is fixed; situation; local position 

  • The posture or position of a thing. 

  • A computer installation, particularly one associated with an intranet or internet service or telecommunications. 

  • A part of the body which has been operated on. 

  • A place fitted or chosen for any certain permanent use or occupation 

  • A category together with a choice of Grothendieck topology. 

  • Region of a protein, a piece of DNA or RNA where chemical reactions take place. 

  • A website. 

verb
  • To situate or place a building or construction project. 

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 site and tract occurred in a corpus of books? (source: Google Ngram Viewer )