Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-Indo-European *tūm-

→ English thumb (inherited)
→ Old English þuma (mention)
→ Spanish túmulo (derived)
→ Galician túmulo (derived)
→ Portuguese túmulo (derived)
→ Albanian tëmth (mention)