Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
ukrutný
←
Polish
okrutny
(cognate)
←
Proto-Slavic
*krǫtъ
(inherited)
→
Czech
ukrutánský
(affix)