It’s my understanding that “Jew” does indeed come from Hebrew “Yehudi” (from “Yehudah” or Judah), and that’s actually the term as it appears in different languages around the world. It wasn’t invented by the goyim. Even English “Jew” is derived from the Germanic form “Jude” (from “Judah”, again). Arabic “Yahud” is cognate.
The Jordanians are right to keep the “Palestinian” Arabs out o their country, because they do not belong there. The whole anti-Israel campaign is actually inspired by Nazism; people from Nasser on down embraced “Islamic socialism”, which is based on national socialism, and “pan-Arabism”, which is based on Nazi pan-Germanism. The Jordanians are right to not want to be a part of that imperialistic Islamic/Arabic caliphate movement.
As for that rather accursed word “Palestine”, it was derived from “Philistine”, and that’s exactly what the “Palestinians” call themselves in Arabic (“al-Filestini”). They are obviously not the same people as the Canaanite Philistines that lived around David’s time.
Yet if my memory serves me correct, the orginal plan was as planned by the early UN to divide the country, on the left of the Jordan River Israel, Jordan or Trans-Jordan on the right side of the Jordan in the years 1946-47.
The sad reality is that, despite Jordan fighting to keep the Palis out, the majority of folks living in Jordan are of that heritage. Frankly it is an effort not to become like what happened to Egypt during the so-called “Arab spring.”