Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Irish rím
← Proto-Celtic *rīmā (inherited)

→ Irish ríomh- (derived)
→ Irish ríomh (inherited)
→ Irish ríomh (mention)
→ Ancient Greek ἀριθμός (cognate)
→ Old Irish rímid (affix)
→ Old Irish adrími (prefix)