Jewish Orthodoxy, Orthodox Judaism - Jews who strictly observe the Mosaic Law as interpreted in the Talmud

Jew, Hebrew, Israelite - a person belonging to the worldwide group claiming descent from Jacob (or converted to it) and connected by cultural or religious ties

Chasid, Chassid, Hasid, Hassid - a member of a Jewish sect that observes a form of strict Orthodox Judaism

Lubavitcher - a member of the Lubavitch movement; a follower of Chabad Hasidism