association vs concomitance

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). 

concomitance

noun
  • A concomitant. 

  • occurrence or existence together or in connection with one another, coexistence 

  • The Roman Catholic doctrine of the existence of the entire body of Christ in the Eucharist, under each element, so that the body and blood are both received by communication in one kind only. 

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