Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Polish
białek
←
Proto-Slavic
*bělъkъ
(inherited)
←
Old Polish
biały
(suffix)
←
Old Polish
ek
(suffix)
→
Polish
białek
(inherited)