Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
czesać
←
Proto-Slavic
*česati
(inherited)
←
Old Polish
czosać
(inherited)
→
Lower Sorbian
cesaś
(cognate)