Different sets of options in video editing software and tools

I would like to ask few things in Adobe Premiere CS6 before I continue to my next project? What is media, video and audio duration? What is the difference between media and video duration? What is the functions of Video usage and audio usage? What is tape name in this instance? What are the uses of comment, log note and file path in video editing? What are the differences of these three? What do you call the name entered through the Capture panel or the Edit offline dialog box?

Thank you!