Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Estonian arv
← Estonian aru (mention)
← Finnish arvo (cognate)
← Proto-Finnic *arvo (inherited)

→ Estonian arvsõna (compound)
→ Estonian rahvaarv (compound)
→ Estonian arvutama (affix)
→ Estonian arvama (suffix)
→ Finnish arvo (cognate)
→ Ingrian arvo (cognate)