Is the reading 缶【かん】の縁【えん】correct? Is the reading correct? _Be careful not to injure yourself on the rim of the can._ < I also found and I found a number of examples here, but not an exact fit for the example sentence of "the rim of a can":

No, for the meaning of 'edge', it can never be .

I think {} is more common, but {} is acceptable too.

This thesaurus entry says

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As listed there, {} is more common than {}. And {} is more common than {}. My impression is {} is more about a point along the edge while {} is the edge itself. (Cf. {} vs {}.) But it is largely a matter of collocation.