Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
gânsac
←
Bulgarian
гъсак
(borrowed)
←
Bulgarian
гъска
(mention)
←
Proto-Indo-European
*ǵʰh₂éns
(derived)
←
Proto-Slavic
*gǫ̑sь
(derived)
→
Romanian
Gânsac
(mention)
→
Romanian
Gînsac
(mention)