(bound form) A small island in a river or a sandbar formed by silt deposits; also used for landforms like a 三角洲 sān​jiǎo​zhōu or 绿洲 lǜ​zhōu

(bound form) small piece of land in a river or lake; islet; sandbank; also used in proper names such as 良渚文化 liáng​zhǔ​wén​huà