Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
trudnic
←
Proto-Slavic
*trudьnъ
(borrowed)
←
Proto-Slavic
*trudъ
(mention)
←
Proto-Slavic
*-ьnъ
(mention)