Nitya Karma : This is Karma of positive nature performed out of habit, like prayer, service, cleanliness, vegetarianism, spirituality, Bhakti etc. Most of it adds to our karmic spiritual positive.
Naimittika Karma : Under this Karma come sacraments related to the particular age of a person, like social obligations etc.
Kaamya Karma : This is Karma performed to fulfill desire. Most of Vikarma falls under this category.
Kartavya Karma : Under this comes any Karma done in the line of duty / Dharma. A person performing Nitya and Kartavya Karma properly is said to have no tension in life.
Nishkarma : This is another synonym for Akarma.