Question: what are the four main vedas?
Answer: The Samhitas (Sanskrit saṃhitā, "collection"), are collections of metric texts ("mantras"). There are four "Vedic" Samhitas: the Rig-Veda, Sama-Veda, Yajur-Veda, and Atharva-Veda, most of which are available in several recensions (śākhā).