Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Proto-Indo-European *h₃ekʷ-

→ English eye (mention)
→ English ettle (mention)
→ Afrikaans oog (inherited)
→ Assamese আখি (root)
→ Assamese আখি (mention)
→ Belarusian вока (derived)
→ Bulgarian око (derived)
→ Bundeli आँख (inherited)
→ Catalan ull (mention)
→ Czech oko (derived)
→ Kashubian òkò (derived)
→ Old Church Slavonic око (root)
→ Old Church Slavonic око (derived)
→ Danish øje (derived)
→ German Auge (derived)
→ Lower Sorbian woko (root)
→ Lower Sorbian woko (derived)
→ Greek όψη (root)
→ Greek κιάλι (derived)
→ Middle English yȝe (mention)
→ Esperanto okulo (derived)
→ Spanish ojo (mention)
→ Finnish akkuna (root)
→ Faroese eyga (derived)
→ French œil (mention)
→ Old French ueil (derived)
→ West Frisian each (derived)
→ Gutnish auga (derived)
→ Old High German ouga (derived)
→ Gothic 𐌰𐌿𐌲𐍉 (derived)
→ Ancient Greek ἄνθρωπος (link)
→ Ancient Greek ὤψ (root)
→ Ancient Greek ὤψ (mention)
→ Ancient Greek ὁράω (derived)
→ Ancient Greek ὄσσε (root)
→ Ancient Greek ὄσσε (mention)
→ Ancient Greek ὄψις (root)
→ Ancient Greek ὄψ (root)
→ Ancient Greek ὄμμα (root)
→ Ancient Greek ὄμμα (derived)
→ Ancient Greek ὄψομαι (root)
→ Ancient Greek ὄσσομαι (derived)