Vocabulary. This word refers to codified, identifiable, demonstratable, teachable, and often used Tango steps or patterns. Such as ? A Volcada, or Colgada, or Sacada, or Parada, Salida, Boleo, Mordita, and the like, just to name a few. These are Tango steps that are referred to as Tango Vocabulary or Vocabulary. Usually, we talk about this stuff in reference to what’s being done musically. However, it’s also short-hand for identification purposes.