Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
бух
→
Romanian
buf
(cognate)
→
Romanian
buh
(borrowed)
→
Romanian
buhă
(borrowed)
→
Romanian
buhã
(borrowed(ro/rup))
→
Megleno-Romanian
buf
(cognate)