Tzadik is a title in Judaism given to people considered righteous, such as biblical figures and later spiritual masters. The root of the word ṣadiq, is ṣ-d-q, which means "justice" or "righteousness". When applied to a righteous woman, the term is inflected as tzadika/tzaddikot.

Tzedakah is a Hebrew word meaning "righteousness", but commonly used to signify charity. This concept of "charity" differs from the modern Western understanding of "charity". The latter is typically understood as a spontaneous act of goodwill and a marker of generosity; tzedakah is an ethical obligation, and it is not properly "charity", like in Christiandom, but a way to empower poor people to support themselves, helping them in developing their talents and skills.