Nitya-mukta and Nitya-baddha

...Krsna's spiritual form has all qualities in full, and those qualities are naturally present in the living entities in minute quantity. The independent nature of Krsna is found insignificantly in the living entities. For this reason the living entities claim to be independent. As a result, all living entities have developed different propensities. By one propensity the living entity searches for his own happiness, and by another propensity he searches for Krsna's happiness. Thus living entities are divided into two groups-those searching for their own happiness and those searching for Krsna's happiness. Those who search for Krsna's happiness are called nitya-mukta, and those who search for their own happiness are called nitya-baddha...

- from SBL: Six Faults that Destroy Bhakti, Srila Bhaktivinoda Thakur.