type of morning glory, rose of Sharon, althea
舜 centers on a specific flowering plant: a type of morning glory, also known as rose of Sharon or althea. The meanings are botanical names for the same or closely related plants.
舜 is a phono-semantic compound. The bottom component 舛 likely contributes the sound, while the upper part 爪 over 冖 may relate to the plant's appearance or a semantic category. The exact historical development is uncertain.
The top looks like a claw 爪 over a cover 冖, and the bottom 舛 suggests spreading vines. Picture a morning glory vine spreading under a protective cover, its claw-like tendrils reaching out.
For シュン, imagine a morning glory blooming soon after sunrise: soon -> シュン, and the flower opens quickly.
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