The kanji 渦 generally conveys the idea of a whirlpool, vortex, or swirl. It represents a circular motion of water or air, drawing things inward toward a central point. This can extend to any situation where something is rapidly turning or spinning.

・On-yomi (音読み): カ (ka) ・Kun-yomi (訓読み): うず (uzu)

⚫︎渦潮 Translation: whirlpool; eddy ⚫︎渦巻 Translation: spiral; coil; vortex ⚫︎竜巻の渦 Translation: the vortex of a tornado

The kanji 渦 is a phono-semantic compound. The left side is the radical 氵 (san-zui), meaning "water". The right side is 渦, which is also used as a phonetic component to suggest the sound. Together, they combine to indicate the circular motion of water, creating a whirlpool or vortex.