Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*seh₁-ro-
→
Italian
sera
(derived)
→
Romanian
seară
(derived)
→
Sardinian
sera
(derived)
→
Sardinian
sero
(derived)