Vaisesika Sūtra 1.1.4

Born from the special characteristics of DHARMA, 'padarthas' i.e. those represented by words' meanings, based on their underlying common and differentiated DHARMAS can be classified as substance (dravya), qualities (guṇa), duties (karma), generality (sāmānya), particularity (viśēṣa), and inherence (samavāyā). Knowledge of their true principles is productive of ultimate good.