From Jewish Leaning site:
Jewish denominations — also sometimes referred to as streams, movements or branches — are the principal categories of religious affiliation among American Jews. The denominations are mainly distinguished from one another on the basis of their philosophical approaches to Jewish tradition, and their degree of fidelity to and interpretation of traditional Jewish law, or .
Outside North America, the non-Orthodox streams of Judaism play a less significant role, and in Israel the vast majority of synagogues and other Jewish religious institutions are Orthodox, even though most Israeli Jews do not identify as Orthodox.
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