Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Romanian undă
← Proto-Indo-European *unt- (derived)
← Latin unda (inherited)

→ Romanian unda (link)
→ Romanian val (link)
→ Romanian undui (affix)
→ Romanian undos (suffix)
→ Romanian radioundă (prefix)
→ Aromanian undã (cognate)