Tag discussion: windmill, wind_turbine

Do we want wind_turbine as a subclass of windmill, with implication? I'm for making them mutually exclusive, but turbines have a tendency to get tagged with only windmill.

For now I've tagged the clearly modern, electricity-generating wind_turbines. Except a few ambiguous cases, windmill -wind_turbine is now composed predominantly of the type with square sails.

When I first started using it I think I was using it under the assumption that it'd be a subcategory of windmill. At least that seems to be how I went about tagging them awhile ago.

This sounds like the same situation as turntable and phonograph. I'd say we go with an implication.

Ok; bump for implication wind_turbine -> windmill

Done