Chasidim are a group of ultra-Orthodox Jews who follow the teachings of the Baal Shem Tov, a mystical rabbi who lived in the 18th century. There are several other words that can be used to describe the Chasidic community, including Hasidim, Hasidic Jews, and Chassidim. These terms all refer to the same group of people who practice a devout and rigorous form of Judaism that emphasizes prayer, study, and strict observance of religious laws and traditions. Other synonyms for Chasidim might include devout Jews, ultra-Orthodox Jews, or pious Jews. However, it is important to note that each of these terms carries its own connotations and may be interpreted differently by different individuals and groups.