We have 3 components to our being - Head, Heart and Hands. Intellect, Mind and Body. We can use these for two purposes - Bhoga and Yoga. Bhoga is deriving happiness and peace from the world. Yoga means deriving happiness and peace from the Inner Self.
Happiness and peace in the world is like a mirage due to the essential nature of the world. Bhoga eventually leads to Roga - Suffering. While Yoga eventually leads to eternal peace and bliss - Liberation.
For the Head, Heart and Hands, Yoga is of three types - Jnana, Bhakti and Karma. Jnana Yoga, Bhakti Yoga and Karma Yoga.
Offcourse there is one more Yoga called Raja Yoga. - Royal Path. Working on the body-mind complex itself. It is working on the energy system through Kriyas.