Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
mărturisi
←
Greek
μαρτυρώ
(borrowed)
←
Proto-Slavic
*marturisati
(mention)
→
Romanian
mărturisire
(suffix)