Rename iTunes "Super-Categories"

I want to be able to re-name the iTunes super-category "Home Video" to "Lectures" because I don't use home videos in iTunes and I want to separate my mp4 lectures from movies (please don't tell me to call them TV Shows or iTunes U, because I don't want them in there either 😉.) Is this possible using terminal or via some other means?

Alternately, I would be open to adding another iTunes Super-Category (Music, AudioBook, Movies, Home Video, Podcasts etc) if possible.