表现 (biǎoxiàn) means to show, display, or manifest a quality/ability, or to behave in a particular way (e.g., at work). It differs from 表演 (biǎoyǎn, HSK3), which is specifically for performing a skill or putting on a show—like acting, dancing, or demonstrating a trick. 表现 is broader and includes everyday behavior and emotional expression, while 为人 (wéirén, HSK7) focuses on one's character or moral conduct.