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 *gʷʰer-

→ English warm (root)
→ English warm (derived)
→ English furnace (root)
→ English thermo- (root)
→ English thermal (root)
→ English thermal (derived)
→ English gore (derived)
→ English göra (derived(en/sv))
→ English gör- (derived(en/sv))
→ Old English gor (derived)
→ Assamese ঘাম (inherited)
→ Assamese ঘামা (derived)
→ Assamese ঘমা (inherited)
→ Assamese ঘিণ (inherited)
→ Bengali ঘাম (inherited)
→ Bengali ঘামা (derived)
→ Catalan forn (mention)
→ Welsh gwâr (derived)
→ Welsh gwres (mention)
→ Danish varm (derived)
→ Lower Sorbian górki (derived)
→ Greek θερμός (derived)
→ Spanish horno (mention)
→ Spanish termo- (root)
→ Spanish térmico (derived)
→ Persian گرم (inherited)
→ Faroese gor (derived)
→ French four (mention)
→ West Frisian waarm (derived)
→ Irish geir (derived)
→ Scottish Gaelic gar (mention)
→ Proto-Germanic Jarrow (derived(gem-pro/en))
→ Galician goro (derived)
→ Westrobothnian gor (derived)
→ Ancient Greek θέρος (root)
→ Ancient Greek θέρος (suffix)
→ Ancient Greek θερμός (root)
→ Ancient Greek θερμός (derived)
→ Gujarati ગરમ (derived)
→ Hindi गर्म (root)
→ Hindi गर्म (derived)
→ Indonesian termos (derived)
→ Indonesian termae (derived)
→ Prakrit 𑀔𑀫𑁆𑀫 (root)
→ Icelandic gormur (derived)
→ Icelandic varmur (derived)
→ Italian forno (mention)
→ Northern Kurdish germ (inherited)
→ Latin formus (root)