I assume you have two Severed Bones. I have no idea what you mean by "polishing", but they are craftable into a variety of items inclusing furniture, strong boxes, and weaponry. Try asking in your local crafting channel :)
I read that as Polish (as in the country) items. I was ready for some ranting about stupid items. I am now highly disappointed and thoroughly confused.
LOL...this is one of the funniest threads I've read in awhile.
I'm assuming Polished Bone is an ingredient in one of his recipes
...so either it's like "Raw Tussah" for example (which is just Tussah Root) and Severed Bone might or might not need to match the description exactly.....or it's a different item completly which is exactly "Polished Wood". Possibly the diff names for diff Tiers of the item/rare.