Prakruti is composed of three components, called gunas. The term guna here means a ‘component factor’. The trigunas are:

1. Satva
Whatever is pure and fine is Satva. It is the essence of a thing by which it manifests itself in buddhi (intelligence). In the world of consciousness such manifestation is essential for the entity of the thing in question.

2. Rajas
Whatever is active in a phenomenon is Rajas.

3. Tamas
Whatever is passive is Tamas. It is mass in inertia. It offers resistance.