Mission critical or just plain critical?

I've really come to dislike the term mission-critical. The sad thing is, I use it all the time. The problem is, developers are hard-pressed to not use the term when referring to important application components. Is there an alternative? Not if you are speaking in terms of marketing. The "mission-critical RDBMS" sounds much more marketable than "really important RDBMS".

Another problem with the term is its' overuse. I might as well have called my first Python program "mission_critical_hello_world.py".

Tag qualifies as a buzzword

Tags. Labels. Folders. Etc. In software, they all serve the same purpose. To categorize and to classify. I can't help but chuckle a little inside when I hear terms like tag-enabled and tag cloud. Wouldn't term hierarchy be a more accurate description? I suppose not. It just goes to show how powerfully attached people are to popular buzzwords.