aromatic grass, iris, flower
蓀 centers on a fragrant flowering plant, specifically an iris or similar aromatic grass. The meanings all point to a single type of plant valued for its scent and bloom.
蓀 combines the grass radical 艹 with 孫, which likely provides the sound. The character was created to name a specific aromatic plant.
The grass top 艹 sits above 孫, like a grandchild of the grass family—a delicate, fragrant iris blooming among the leaves.
For ソン, imagine a son planting an iris in the garden: son -> ソン, and the flower grows under the grass top.
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