Guna - सात्विक, राजस, तामस

Guṇa (Sanskrit: गुण) means 'string' or 'a single thread or strand of a cord or twine'. In more abstract uses, it may mean 'a subdivision, species, kind, quality', or an operational principle or tendency.[1]

In Samkhya philosophy, there are three major guṇas that serve as the fundamental operating principles or 'tendencies' of prakṛti (universal nature) which are called: sattva guṇa, and rajas guṇa, tamas guṇa. The three primary gunas are generally accepted to be associated with creation (satva), preservation (rajas), and destruction (tamas).[2] The entire creation and its process of evolution is carried out by these three major gunas.[3][4][5]