associated vs cognate

associated

adj
  • connected or amalgamated with another company. 

  • connected with something or another person. 

cognate

adj
  • Of the same or a similar nature; of the same family; proceeding from the same stock or root. 

  • Allied by blood; kindred by birth; specifically (law) related on the mother's side. 

  • Descended from the same source lexemes (same etymons) of an ancestor language. 

noun
  • One of a number of things allied in origin or nature. 

  • A word either descended from the same base word of the same ancestor language as the given word, or strongly believed to be a regular reflex of the same reconstructed root of proto-language as the given word. 

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