Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Irish clúas
← Proto-Celtic *kloustā (inherited)
← Proto-Indo-European *ḱlew- (root)
← Proto-Indo-European *ḱlew- (inherited)

→ Irish cluas (inherited)
→ Irish clois (mention)
→ Irish clois (mention)
→ Scottish Gaelic cluas (inherited)
→ Manx cleaysh (inherited)