What is the difference between Workflow Engines and BPM Suites?

In the 1990’s, workflow vendors created quite a bit of confusion in the market when trying to define workflow and how it could best be utilized. Today, that situation is being replicated in the BPM industry. Ask 10 different vendors to define BPM or BPM suites, and you will likely get 10 variations of the definition, even though all vendors use the same basic terminology to explain it.
Organizations need help sorting through this confusion in order to discover why a BPM suite is a different, and more important, application for process improvement.