Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Latin rex
← Proto-Indo-European *h₃reǵ- (root)
← Proto-Indo-European *h₃rḗǵs (inherited)
← Proto-Italic *rēks (inherited)
← Sanskrit राजन् (cognate)
← Old Irish rí (cognate)

→ English regal (mention)
→ English Roy (derived)
→ English R (link)
→ English R (link)
→ English Bognor Regis (derived)
→ English regius (mention)
→ English interrex (mention)
→ English regious (mention)
→ English rex sacrorum (borrowed)
→ Aragonese rei (inherited)
→ Asturian rei (inherited)
→ Dalmatian ra (inherited)
→ Greek ρήγας (derived)
→ Spanish rey (inherited)
→ Basque errege (derived)
→ French radja (cognate)
→ French rexisme (mention)
→ French rexiste (mention)
→ French radjah (cognate)
→ Middle French roy (inherited)
→ Old French roi (inherited)
→ Old French roial (mention)
→ Friulian re (inherited)
→ Ladino ריי (derived)
→ Lithuanian rikis (cognate)
→ Translingual T. rex (derived)
→ Mirandese rei (inherited)
→ Dutch radja (cognate)
→ Dutch interrex (mention)
→ Dutch radjah (cognate)
→ Norman roué (inherited)
→ Norman rouai (inherited)
→ Occitan rei (inherited)
→ Old Prussian rikīs (cognate)
→ Old Occitan rey (inherited)
→ Old Occitan rei (inherited)
→ Portuguese rajá (cognate)
→ Romansch rai (inherited)
→ Romansch retg (inherited)
→ Romansch rètg (inherited)
→ Romansch raig (inherited)
→ Romanian rigă (derived)
→ Albanian rig (derived)
→ Albanian regj (mention)