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

→ Bulgarian бадакам (affix)
→ Polish -kać (inherited)
→ Russian -кать (inherited)
→ Serbo-Croatian -kati (inherited)
→ Serbo-Croatian -кати (inherited)