Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Polish zapewnić
Polish za- (affix)
Polish pewny (affix)
Polish -ić (affix)

Belarusian запэўніць (cognate)
Polish zapewniać (suffix)
Polish zapewnienie (affix)
Ukrainian запевнити (cognate)