arbor (English)
├── arbour (Middle English (1100-1500))
│ └── erbier (Old French (842-ca. 1400))
│ └── erbe (Old French (842-ca. 1400))
│ └── herba (Latin)
└── arbre (French)
└── arbre (Old French (842-ca. 1400))
└── arbor (Latin)
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