Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Ancient Greek ἄλγος
← Proto-Indo-European *h₂leg- (root)
← Proto-Indo-European *h₂leg- (derived)

→ English algolagnia (derived)
→ English nostalgia (mention)
→ English -algia (derived)
→ English neuralgia (mention)
→ English algophobia (mention)
→ English heartburn (mention)
→ English algedonic (mention)
→ English analgesic (mention)
→ English veisalgia (derived)
→ English cephalgia (mention)
→ English -algy (derived)
→ English causalgia (mention)
→ English cardialgy (mention)
→ English algesthesis (mention)
→ English rachialgia (mention)
→ English antalgic (derived)
→ English coxalgy (mention)
→ English cephalalgy (mention)
→ English abdominalgia (borrowed)
→ English algedonics (mention)
→ English alginuresis (derived)
→ Czech nostalgie (mention)
→ Danish nostalgi (mention)
→ German Nostalgie (mention)
→ Greek νοσταλγία (mention)
→ Greek άλγος (inherited)
→ Greek αλγολαγνεία (inherited)
→ Spanish nostalgia (mention)
→ Spanish -algia (derived)
→ Spanish odontalgia (mention)
→ Finnish nostalgia (mention)
→ French nostalgie (mention)
→ Irish anailgéiseach (mention)
→ Ancient Greek ἀργαλέος (mention)
→ Ancient Greek ἀλγεινός (affix)
→ Ancient Greek τανηλεγής (mention)
→ Ancient Greek θυμαλγής (affix)
→ Ancient Greek ἀλγέω (affix)
→ Hungarian nosztalgia (mention)
→ Italian nostalgia (mention)
→ Latin -algia (derived)
→ Norwegian Bokmål nostalgi (mention)
→ Norwegian Nynorsk nostalgi (mention)
→ Polish nostalgia (mention)
→ Polish neuralgia (mention)
→ Polish newralgia (mention)
→ Portuguese nostalgia (mention)
→ Old Armenian աղկաղկ (cognate)