Myelopathy myo-lop-a-thee. Myel ['spinal cord'] opathy ['problem'] is a disease of the spinal cord. This can be distingiushed from a radiculopathy or neuropathy based on the symptoms and findings during a doctors examination. Myelopathy is therefore a descriptive term and many different disease processes can cause it.
Taekwondo is a martial art that was developed by the Koreans with tactical preferences for kicks over hands (although both are included), while Karate is a Japanese development of hand fighting which was refined in Okinawa, and likely brought there from early hand fighting in China.
Karate also usually incorporates weapons training into it's system using the traditional Budo weapons (Staff, Nunchaku, Tonfa, Kama, Sai). Empty hand Karate utilized punches and kicks and the training usually involves serious toughening of your entire body. Kendo is sword/stick fighting. They where a type of armor/face shield and fight with bamboo swords.