潟|かたkata[2]odaka (tail-high)

1. nounlagoon
2. nouninlet; creek
3. nountidal beach; tidal flat; tideland

• Synonym潟湖せきこWrittenWritten geographic term for a lake cut off from the open sea by a sandbar; unlike 「潟」, it never refers to tidal flats exposed at low tide.
• SynonymラグーンNeutralNeutral loanword for a lagoon; it also means the reef lagoon inside an atoll, and fits both geographic description and everyday use. 「潟」 lacks this reef-lagoon sense.
• Related海跡湖かいせきこWrittenWritten geographic-classification term for a shallow nearshore body of water cut off from the open sea by a sandbar; it does not cover 「潟」's tidal-flat sense.

Use 「潟」 for both lakes cut off from the sea by sandbars and tidal flats exposed at low tide, as in 「干潟」. For the lake alone, 「潟湖」 or 「ラグーン」 works; 「ラグーン」 also covers the reef lagoon inside an atoll.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. （かた）遠浅とおあさの海岸かいがんで、干潮かんちょう時じに露出ろしゅつする陸地りくち。
2. （かた）海うみの一部いちぶが、砂州さすなどに区切くぎられることによりできた湖みずうみ。ラグーン。