Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Serbo-Croatian
vek
←
Proto-Slavic
*věkъ
(inherited)
→
Romanian
veac
(cognate)
→
Serbo-Croatian
odveka
(prefix)
→
Serbo-Croatian
pamtivek
(mention)