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no they do not call it that, the edge is the edge, the shape is reffered toas V grind or convex depending on the shape, never heard of the "edge of the edge"
yes there is it but it is not the edge...

I think the guy in the vid explains some things well, but as pointed above the white line on the edge is an issue.
Some people make honing a full branch of science. It is not that complicated and...