What most people think of as Transylvania -- the larger province or principality -- is actually made up of several parts. Most people forget that there are other areas nearby which are not a part of Transylvania. The Banat is one of them.
This distinction is important to people who live in the area because they maintain a different cultural identity than the rest of Romania.
The map above shows Transylvania while it was part of the Kingdom of Hungary. Romania is a darker pink, but there is hardly a mention of the Banat region. In the image below, the darker yellow area indicates where the Banat and other smaller regions are, and in many people's minds, this is a part of Transylvania.
just a name now.