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

→ Czech prs (inherited)
→ Kashubian piers (inherited)
→ Old Church Slavonic прьси (inherited)
→ Polish pierś (inherited)
→ Russian перси (inherited)
→ Serbo-Croatian prsa (inherited)
→ Serbo-Croatian прса (inherited)
→ Slovak prsia (inherited)