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

→ Belarusian іржавы (mention)
→ Macedonian кадрав (mention)
→ Romanian Oravița (mention)
→ Russian кудрявый (mention)
→ Russian ржавый (mention)