Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Silesian
ôcyl
←
Czech
ocel
(borrowed)
←
Proto-Slavic
*ocelь
(derived)
←
Proto-Slavic
*ocělь
(mention)