Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*bezdъna
→
Bulgarian
бездна
(inherited)
→
Polish
bezdna
(inherited)
→
Romanian
beznă
(borrowed)
→
Russian
бездна
(inherited)