Full context:   In the combined Nyayavaisesika school, the twenty four gunas are divided into two types on the basis of generality and speciality of the gunas. They are sāmānya guṇas (general qualities) and viśeṣa guṇas (special qualities). The gunas which exist in two or more than two dravyas are called as sāmānya guṇas and similarly the gunas which specially exist in only one type of dravya are called as viśeṣa guṇas. Since gurutva exists in the two types of dravyas namely prithvi and jala, so it is classified as a sāmānya guṇa.