locus vs situation

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. 

situation

noun
  • The place in which something is situated; a location. 

  • A position of employment; a post. 

  • The combination of circumstances at a given moment; a state of affairs. 

  • Position or status with regard to conditions and circumstances. 

  • An outfit, garment, or look. 

  • A difficult or unpleasant set of circumstances; a problem. 

  • An individual movie theater. 

  • The way in which something is positioned vis-à-vis its surroundings. 

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