The jews are called by many names. Some names are clear. Israelites, for example, is a name given by Hashem to Jacob and the jews are descendant of that guy.
What about the other names?
Why Hebrew? For example. Is it from Eber?
What about Judaism? From Judah?
Ibrani? Where does that name comes from? Ibrahim? Eber?
And Judea? Is that from Judah again?
I could add semites (from Shem, son of Noah?) but that's really strange.
And why the names are used to call jews (and only jews)? Obviously, assuming the torah is correct, Eber have many descendants than just Israel. Israel has many descendants than just Judah.