义 is mostly used in compounds: 意义 (meaning), 正义 (justice), 义务 (duty/obligation), 主义 (doctrine/-ism). It is rarely used as a standalone word in modern Chinese.
culture
义 is one of the core Confucian virtues. In Chinese history and literature, 义 represents loyalty between sworn brothers, famously embodied by Guan Yu (关羽) in Romance of the Three Kingdoms.