This episode originally was scheduled to air on November 6, 2011 but was deferred to February 12, 2012. As a result, narrative elements are presented to viewers in the wrong order.
Chronologically, "Romance Languages" takes place between The Genuine Article (2011) and Truth or Dare (2011).
To linguists, the Romance languages are those derived from Latin as spoken by the ancient Romans. The principle languages are French, Italian, Portuguese, Romanian, and Spanish. Other regional dialects include Provençal, Catalan, etc.