Dharma is honest and upright conduct or righteous action.
Artha means a righteous and honest pursuit of economic activities.
Kama is the fulfillment of one’s normal desires.
Moksha is liberation, that is absorption of the self into eternal bliss.
Related to these four concepts are the concepts of karma and samsara. Depending upon one’s deeds (karma) one is able to reach the stage of moksha or liberation.