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

→ Estonian kaksteist (compound)
→ Estonian -ik (link)
→ Estonian kaksik (affix)
→ Estonian kahtlema (suffix)
→ Ingrian kaks (cognate)
→ Karelian kaksi (cognate)