Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*orǫžьje
→
Bulgarian
оръжие
(inherited)
→
Macedonian
оружје
(inherited)
→
Russian
ружьё
(inherited)
→
Russian
оружие
(derived)
→
Serbo-Croatian
oružje
(inherited)