Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
czółno
←
Proto-Slavic
*čьlno
(inherited)
→
Lower Sorbian
cołn
(cognate)
→
Lithuanian
kalnas
(cognate)
→
Polish
czółenko
(suffix)