There has been much debate between Christian denominations on whether or not there is a special priesthood rooted in apostolic succession. I do not mean to disturb this debate with my question, but I would like some clarification.
Are there any early Christian sources that demonstrate that they recognized a difference between a "presbyter" and a "priest"? By early Christian, I mean ~2nd to 4th century.
For example, if there were a document where an early Christian distinguishes between presbyters and priests, that would be highly relevant here. Or if there were a document where an early Christian completely conflates presbyters and priests, that would also be highly relevant here.
If there are some who distinguish and some who conflate the terms, please cite both.