Tai Chi (Taiji) is an internal martial art based on internal power and effortless movement. The most famous part of Tai Chi are the moving exercises, known as the "Tai Chi form", which is a series of slow, continuous and flowing movements allowing you to become aware of your whole body.
This makes it ideal for people of all ages and fitness levels improving relaxation, balance, co-ordination and flexiblity. It also strengthens the body.
Qigong (Chi Kung) is a traditional Chinese soft exercise which enable one's attention to be focused on all parts of the body creating harmony and balance between body and mind. Qi can be translated as breath or energy and Gong as practice.