I was making a question related to bash built-in's and realise the existence of those two tags: shell-builtin built-in
built-in tag has only 3 questions, no wiki and no followers, in my opinion all questions would also fit in shell-builtin.
shell-builtin has 15 questions, with various shells and 1 follower.
Are those duplicate tags?
Wouldn't it be better if those tags are directly related to the shell itself like bash-builtin, csh-builtin, etc?