shibui - cool, old & cool, nostalgic/retro. Like a Meiji-era house that is better-looking in its old age, or like tea ceremony pottery over 100 years old.
unchiku - trivia
ryokai - "over", like when communicating over radio
Learning the Japanese language requires daily practice. Can I keep it up until 2009's JLPT 2 test? Definitely.