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

→ Belarusian цалаваць (suffix)
→ Bulgarian -осам (cognate)
→ Polish padać (mention)
→ Polish -ać (inherited)
→ Romanian obârșie (affix)
→ Russian обедать (affix)
→ Russian целовать (suffix)
→ Russian -ать (inherited)
→ Russian -ать (inherited)
→ Ukrainian обідати (affix)