Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old English feþer
← Breton ein (cognate)
← Proto-Celtic *petno- (mention)
← Proto-Germanic *feþrō (inherited)
← Proto-West Germanic *feþru (inherited)
← Old High German fedara (cognate)
← Ancient Greek πέτεσθαι (cognate)
← Ancient Greek πτῶσις (mention)
← Proto-Indo-European *péth₂r̥ (derived)
← Proto-Indo-European *peth₂- (mention)
← Latin penna (cognate)
← Old Norse fjǫðr (cognate)
← Old Frisian fethere (cognate)
← Old Saxon fethera (cognate)
← Old Irish én (cognate)
← Old Armenian թիռ (cognate)

→ English wing (link)
→ English feather (inherited)
→ Old English feþerbære (suffix)
→ Greek πτηνό (cognate)
→ Middle English feþer (inherited)
→ Old High German fedara (cognate)
→ Ancient Greek πέτομαι (cognate)
→ Ancient Greek ἵπταμαι (cognate)
→ Norwegian Bokmål fjær (cognate)
→ Old Norse fjǫðr (cognate)
→ Yola vethers (inherited)