节律 refers to rhythm and tempo in both linguistic and biological domains. In linguistics, it describes the prosodic patterns of speech—stress, intonation, and timing. In biology and general usage, it refers to regular rhythmic patterns like circadian rhythms or the pace of moving things (e.g., steps, music). It functions as an attributive modifier (adjective) in most contexts, e.g., 节律性 (rhythmic) or directly modifying nouns (e.g., 节律特征 'prosodic features').