just to clarify this part. these 3 are very different from each other.
there is no reversal in bitcoin. if you send the transaction it is out there, you can't cancel it. you can't reverse it. but you can double spend it unless it is confirmed.
as for orphan, if your transaction is mined in a block and that block is orphaned there is a good chance that your transaction is also mined in the other block on the main chain which orphaned the other. the risk of orphan+double spend is that the person sending the transaction having access to a large hashrate so that he can orphan the other block which mined the initial tx and include a new one (double spend to a different address) in the new block he mines.