Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Sardinian
reghere
←
Proto-Indo-European
*h₃reǵ-
(root)
←
Latin
regere
(inherited)
←
Latin
regō
(mention)