Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*ob-
→
Belarusian
аблічча
(mention)
→
Bulgarian
окръг
(mention)
→
Bulgarian
обадя
(mention)
→
Old Church Slavonic
обида
(mention)
→
Polish
obóz
(mention)
→
Romanian
obloji
(affix)
→
Romanian
obrinti
(affix)
→
Russian
округ
(mention)
→
Russian
окорок
(mention)
→
Russian
обида
(mention)
→
Russian
опыт
(mention)
→
Russian
оболочка
(affix)
→
Russian
обличье
(mention)
→
Russian
ошмёток
(mention)
→
Serbo-Croatian
одољети
(mention)
→
Serbo-Croatian
одолети
(mention)
→
Ukrainian
обличчя
(mention)