My Wife Takes Oxymorphone HCL 10 Mg Tablet And Opana

My wife takes Oxymorphone HCL 10 mg tablet and Opana ER 10 mg tablets. She took them out of the bottles to put in a daily pill minder, and now we're not sure which one is which One pill has an "E" on one side and a "10" on the other. It is concave on both sides. The other one is a deeper pink color, convex on both sides, has a "10" on one side and "E795" on the other. Can you tell me which is which?