Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Estonian teadma
← Estonian tee (mention)
← Proto-Finnic *teetädäk (inherited)

→ Estonian teadus (affix)
→ Estonian teadmine (suffix)
→ Estonian teadlane (suffix)
→ Estonian teatama (suffix)
→ Ingrian tiitää (cognate)