Basically what the title says. Both tags mentioned are currently in use, with 3 questions having the [training] tag and 8 having the [improvement] tag. I think the [training] tag is pretty much superfluous, since any question along the lines of "How should I train for __ aspect of chess?" could rightfully/just-as-usefully be tagged as an [improvement] question. Agree? Disagree?
Out of curiosity: If I were to remove the [training] tag from all questions to which it currently applies, would it disappear from the tag list?