The title is misleading I admit, it should rather read “Japanese is easy – sometimes”. I’m currently swoting kanji for the Japanese Language Proficiency Test JLPT. Every now and then I come across a kanji combination that is so logical that it’s startling.
Example: what do you do when you feel dizzy – chances are you roll your eyes. In Japanese 目が回る = dizzy. 目 stands for eye, が is the topic/subject marker, and 回 plus る mean to turn around, rotate, revolve. Easy and obvious, isn’t it ;-).