岩流圈

• 氵(water)RADICAL
• 㐬(swirling flow; whirlpool)PHONETIC

Water flowing in a whirlpool becomes a stream, which is the circulation of water.

• 囗(surround; square)RADICAL
• 卷(roll; book)PHONETIC

A circle is a closed boundary that wraps around, like a rolled paper forming a complete loop.