And they gave unto Jacob all the strange gods which were in their hand, and all their earrings which were in their ears; and Jacob hid them under the oak which was by Shechem. (Genesis 35:4 KJV)
But Deborah Rebekah's nurse died, and she was buried beneath Bethel under an oak: and the name of it was called Allonbachuth. (Genesis 35:8 KJV)
So the idols were buried "under an oak" and Deborah Rebekah's nurse was buried beneath Bethel "under an oak"
Why the mention of Rebekah?
H439 - 'Allown Bakuwth = Outline of Biblical Usage: Allon Bachuth = "oak of weeping"