airplane (English)
├── air (English)
│ └── air (Middle English (1100-1500))
│ └── aeir (Anglo-Norman)
└── plane (English)
├── plane (Old French (842-ca. 1400))
│ └── platanus (Latin)
│ └── πλάτανος (Ancient Greek (to 1453))
│ └── πλατύς (Ancient Greek (to 1453))
└── planum (Latin)
└── planus (Latin)
└── πλάνος (Ancient Greek (to 1453))
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