Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Serbo-Croatian
dlaka
←
Proto-Slavic
*dòlka
(inherited)
→
Polish
kłak
(cognate)
→
Serbo-Croatian
kosa
(link)