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 *peth₂-

→ English pen (root)
→ English pen (mention)
→ English impetuous (root)
→ English pass (derived)
→ English feather (root)
→ English feather (mention)
→ English fathom (root)
→ English hippopotamus (root)
→ English expand (root)
→ English appetite (root)
→ English pace (root)
→ English patella (root)
→ English apoptosis (root)
→ English repeat (root)
→ English pas (root)
→ English patina (derived)
→ English compete (root)
→ English petulant (root)
→ English impetus (root)
→ English petal (root)
→ English petal (derived)
→ English perpetual (root)
→ English propitiate (root)
→ English petition (root)
→ English propitious (root)
→ English patent (root)
→ English patent (derived)
→ English centripetal force (root)
→ English centripetal (root)
→ English competent (root)
→ English passim (root)
→ English patently (root)
→ English pennaceous (root)
→ English pinion (root)
→ English dipteran (root)
→ English hymenopteran (root)
→ English appetition (root)
→ English patera (root)
→ English antiptosis (root)
→ English -ptile (root)
→ Old English feþer (mention)
→ Old English fæþm (derived)
→ Welsh dodi (mention)
→ Welsh edau (derived)
→ German Feder (mention)
→ Lower Sorbian ptašk (derived)
→ Lower Sorbian pjero (mention)
→ Greek πετεινός (root)
→ Greek πετεινός (mention)
→ Greek πτηνό (root)
→ Greek πτηνό (mention)
→ Greek ιπτάμενος (root)
→ Greek ιπτάμενος (mention)
→ Greek πετάω (root)
→ Greek πετάω (mention)
→ Greek ίπταμαι (root)
→ Greek ίπταμαι (mention)
→ Middle English passen (derived)
→ Spanish pedir (derived)
→ Spanish pájaro (mention)
→ Spanish pedido (derived)
→ Faroese fjøður (derived)
→ Faroese pennur (mention)
→ French passereau (mention)
→ Irish éis (root)
→ Irish éis (derived)
→ Galician pena (mention)
→ Old High German fedara (mention)
→ Ancient Greek πτῶμα (root)
→ Ancient Greek πίπτω (root)
→ Ancient Greek πίπτω (mention)
→ Ancient Greek ποταμός (root)
→ Ancient Greek πτερόν (root)
→ Ancient Greek πτέρυξ (root)
→ Ancient Greek πετεινός (root)
→ Ancient Greek πετεινός (mention)
→ Ancient Greek πέταλον (root)
→ Ancient Greek πέταλος (root)
→ Ancient Greek πέταλος (derived)
→ Ancient Greek πέτομαι (root)