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

→ Bulgarian къс (inherited)
→ Czech kus (inherited)
→ Latvian kost (cognate)
→ Russian кус (inherited)
→ Serbo-Croatian kus (inherited)
→ Serbo-Croatian кус (inherited)
→ Slovak kus (inherited)
→ Slovene kos (inherited)