classroom (English)
├── class (English)
│ └── classe (French)
│ └── classis (Latin)
└── room (English)
├── rome (Middle English (1100-1500))
│ └── rume (Old English (ca. 450-1100))
└── roum (Middle English (1100-1500))
└── rum (Old English (ca. 450-1100))
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