Others will chime in with a bit more experienced knowledge, but I've seen blades that have been honed to where the tips of the edge have produced a squared corner on what is supposed to be a rounded edge. More experienced honers will be able to take care of that.

I've never sharpened knives at any rate, so I can't speak for the similarities, but I know a few people here have said that there's a decent difference between edges on a knife and edges on a razor, primarily the delicate nature of a razor edge.

Additionally, you said there was an edge, but then recanted and said there was no edge? Pictures, of course, always help.