Also known as water cistern
thumb|Portuguese Cistern (Mazagan)|Portuguese cistern (Mazagan), [[El Jadida, Morocco (1514)]] thumb|The difference between a cistern and a well is in the source of the water: A cistern collects [[fresh water where a well draws from groundwater.]]
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thumb|Portuguese Cistern (Mazagan)|Portuguese cistern (Mazagan), [[El Jadida, Morocco (1514)]] thumb|The difference between a cistern and a well is in the source of the water: A cistern collects [[fresh water where a well draws from groundwater.]]
A cistern (; , ; ) is a waterproof receptacle for holding liquids, usually water. Cisterns are often built to catch and store rainwater. To prevent leakage, the interior of the cistern is often lined with hydraulic plaster.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).