association vs segregation

association

noun
  • The act of associating. 

  • The state of being associated; a connection to or an affiliation with something. 

  • Relationship between classes of objects that allows one object instance to cause another to perform an action on its behalf. 

  • A benevolent overseas Chinese organization of popular origin for overseas Chinese individuals with the same surname or trade or business. 

  • A group of persons associated for a common purpose; an organization; society. 

  • Any relationship between two measured quantities that renders them statistically dependent (but not necessarily causal or a correlation). 

segregation

noun
  • The setting apart or separation of things or people, as a natural process, a manner of organizing people that may be voluntary or enforced by law. 

  • The separation of people (geographically, residentially, or in businesses, public transit, etc) into racial or other categories (e.g. religion, sex). 

  • The setting apart in Mendelian inheritance of alleles, such that each parent passes only one allele to its offspring. 

  • Separation from a mass, and gathering about centers or into cavities at hand through cohesive or adhesive attraction or the crystallizing process. 

  • The separation of a pair of chromatids or chromosomes during mitosis and meiosis 

  • The separation of people (geographically, residentially, or in businesses, public transit, etc) into various categories which occurs due to social forces (culture, etc). 

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