Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*vьrtъpъ
→
Bulgarian
въртоп
(inherited)
→
Polish
wertep
(derived)
→
Russian
вертеп
(cognate)