Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*opasnъ
→
Bulgarian
опасен
(inherited)
→
Macedonian
опасен
(inherited)
→
Russian
опасный
(inherited)
→
Serbo-Croatian
опасан
(inherited)