Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Proto-Celtic *betuyā

→ Catalan bedoll (mention)
→ Welsh bedw (mention)
→ Spanish abedul (mention)
→ Old French boul (mention)
→ Irish beith (mention)
→ Scottish Gaelic beith (mention)
→ Italian betulla (mention)
→ Latin betula (mention)
→ Portuguese bétula (mention)