Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
kierz
←
Proto-Slavic
*kъřь
(inherited)
←
Old Polish
kierz
(inherited)
→
Czech
keř
(cognate)
→
Slovak
ker
(cognate)