Really, there in no such thing as a "Jordanian" either.
It was originally what was supposed to be given to the Jews in the The Balfour Declaration of 1917. You can thank the antisemitic and murderous British government for that one.
The area originally included all of what is now "Jordan", as well as all of what is now Israel, and the territories between them. However, when Great Britain's protégé Emir Abdullah was forced to leave the ancestral Hashemite domain in Arabia, the British created a realm for him that included all of the land east of the Jordan River. There was no traditional or historic arab name for this land, so it was named after the river: first Trans-Jordan and later Jordan.
Since it went against the Balfour Declaration of 1917, I like to refer to "Jordan" as an "illegal settlement".