Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
žertovat
←
Middle High German
serten
(borrowed)
←
Upper Sorbian
žortować
(cognate)
←
Polish
żartować
(cognate)
←
Slovak
žartovať
(cognate)
→
Polish
żartować
(cognate)