If tag "foo" refers to two or more different technologies or concepts is it better to retag the less common usages or is it better to add additional tags to disambiguate?
My particular issue is with the curl tag which mostly refers to the command line tool and associated library but could also refer to the Curl programming language & software platform. Is it better to retag the Curl language questions as curl-language (any other suggestions?) or add some other tag such as "language"?