had my scope yesterday Help with termanology please

I'm going to answer your question assuming you really do want to know the possibilities suggested in the paperwork.  I hesitate because I think it's probably best for you to just wait for your doctor rather than worry yourself by thinking about what it MIGHT be, but if it were me I wouldn't ask unless I really wanted an answer, so I'm going to give you an answer.

Duodenitis is inflammation of the duodenum, the part of the small intestine just past the stomach.  Antral erythema suggests redness in the stomach lining. To me, that sounds consistent with chronic gastritis and/or ulcers.  Retained bile could be a gall bladder issue.  If you look up "friability colon" it looks like a symptom of ulcerative colitis.  Assuming you had the scope because of persistent digestive complaints, none of these would be very surprising.  

Sending away biopsies isn't unusual, please don't stress yourself out about it.  People tend to hear "biopsy" and think they mean that cancer is suspected, but that's not the case.  A biopsy just means they are testing a sample of tissue and it could be for any number of reasons (including those I mentioned above). 

I'm really kind of surprised they would send you away with the paperwork knowing that you could Google the terms and come to your own conclusions rather than just have you wait until the doctor calls.  You would think they wouldn't want people doing that and worrying themselves further.