Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Polish
krzciuk
←
Proto-Slavic
*krьstiti
(derived)
←
Old Polish
krzcić
(affix)
←
Old Polish
-uk
(affix)