tree
楩 refers to a type of tree, with no clear abstract extensions beyond that botanical sense.
楩 combines 木 (tree) with 便, which likely contributes the sound ヘン. The character is used for a specific tree name.
The tree radical 木 beside 便 suggests a tree whose name sounds like 便. Picture a convenient tree that provides shade exactly where you need it.
For ヘン, imagine a hen roosting in this tree: hen -> ヘン, and the tree is its favorite spot.
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