Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Italic
*folgos
→
French
foudre
(inherited)
→
Italian
folgore
(inherited)
→
Latin
fulgur
(inherited)
→
Romanian
fulger
(inherited)