confederate vs unionized

confederate

adj
  • banded together; allied. 

  • of, relating to, or united in a confederacy 

verb
  • To combine in a confederacy. 

noun
  • A member of a confederacy. 

  • An accomplice in a plot. 

  • An actor who participates in a psychological experiment pretending to be a subject but in actuality working for the researcher. 

unionized

adj
  • Organized into a trades union or trades unions. 

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