Most characters that have this radical are related to materials, products or artworks that are made of silk or linen threads. For example, 绪 the end of silk threads; 经, vertical threads on textile; 续, to connect the thread ends; 约, twine, wind or tie.
红 绿 约 级 纪 纸 线 细 练 终 绍 经 结 给 绝 继 续 绩