The Talmud (/ˈtɑːlmʊd, -məd, ˈtæl-/; Hebrew: תַּלְמוּד talmūd "instruction, learning", from a root "teach, study") is a central text of Rabbinic Judaism. It is also traditionally referred to as Shas (ש״ס), a Hebrew abbreviation of shisha sedarim, the "six orders", a reference to the six orders of the Mishnah. The term "Talmud" normally refers to the collection of writings named specifically the Babylonian Talmud (Talmud Bavli), although there is also an earlier collection known as the Jerusalem Talmud (Talmud Yerushalmi) or Palestinian Talmud. When referring to post-biblical periods, namely those of the creation of the Talmud, the Talmudic academies and the Babylonian exilarchate, Jewish sources use the term "Babylonia" long after it had become obsolete in geopolitical terms.
The Talmud has two components; the Mishnah (Hebrew: משנה, c. 200 CE), a written compendium of Rabbinic Judaism's Oral Torah; and the Gemara (c. 500 CE), an elucidation of the Mishnah and related Tannaitic writings that often ventures onto other subjects and expounds broadly on the Hebrew Bible. "Talmud" translates literally as "instruction" in Hebrew, and the term may refer to either the Gemara alone, or the Mishnah and Gemara together.