Indian philosophy is a collection of ideas from the Indian subcontinent that asks big questions about reality, knowledge, and how we should live.
Darśana means 'ways of seeing' or 'ways of looking at' the world, and scholars who study these ideas use this word.
Ānvīkṣikī means careful asking or investigation.
Āstika are orthodox thinkers who accept the Vedas, and nāstika are heterodox thinkers who do not.
The six orthodox schools are Nyāya, Vaiśeṣika, Sāṃkhya, Yoga, Mīmāṃsā, and Vedānta.
The Jain view says the soul and the body are completely different, the soul is full of knowledge and peace, and actions leave karma on the soul, which keeps it tied to many lives until karma is removed.
The two big Buddhist groups are Mahayana and non-Mahayana (Śrāvakayāna). Mahayana uses new sutras and teaches many Buddhas and the bodhisattva idea.