locality vs locus

locality

noun
  • An area or district considered as the site of certain activities; a neighbourhood. 

  • Limitation to a county, district, or place. 

  • The fact or quality of having a position in space. 

  • A built-up area, i.e. a city, town or village 

  • The features or surroundings of a particular place. 

  • The condition of being local. 

  • The situation or position of an object. 

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 locality and locus occurred in a corpus of books? (source: Google Ngram Viewer )