Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
otavă
←
Bulgarian
отава
(borrowed)
←
Serbo-Croatian
otava
(borrowed)
←
Proto-Slavic
*otava
(derived)
→
Romanian
Otavă
(mention)