Contradiction with Genesis 11:9
Describes the naming of Babel as a result of God's actions, contrasting the human-driven naming in Genesis 21:31.
Genesis 11:9: Therefore is the name of it called Babel; because the LORD did there confound the language of all the earth: and from thence did the LORD scatter them abroad upon the face of all the earth. [Babel: that is, Confusion]
Contradiction with Genesis 26:33
Isaac also names a well Beersheba, suggesting a separate tradition or event for the name's origin.
Genesis 26:33: And he called it Shebah: therefore the name of the city [is] Beersheba unto this day. [Shebah: That is, an oath] [Beersheba: that is, the well of the oath]