Question: how are the vedas and the upanishads different?
Answer: Rig, Yajur, Sama and Atharva are the four Vedas. A Veda is divided into four parts, namely, Samhita, Brahmana, Aranyaka and Upanishad. It can be seen from the division that Upanishad forms the last part of a given Veda. Since Upanishad forms the end part of a Veda it is also called as Vedanta.