district vs locus

district

noun
  • An area or region marked by some distinguishing feature. 

  • the Soho district of London 

  • An administrative division of an area. 

  • An administrative division of a county without the status of a borough. 

verb
  • To divide into administrative or other districts. 

locus

noun
  • A place or locality, especially a centre of activity or the scene of a crime. 

  • A fixed position on a chromosome that may be occupied by one or more genes. 

  • The set of all points whose coordinates satisfy a given equation or condition. 

  • A passage in writing, especially in a collection of ancient sacred writings arranged according to a theme. 

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