Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Irish álaind
← Old Irish ad- (derived)
← Old Irish lainn (mention)

→ Irish álainn (inherited)
→ Irish áille (mention)
→ Scottish Gaelic àlainn (inherited)
→ Scottish Gaelic alainn (inherited)
→ Manx aalin (inherited)