Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
rigo
←
Proto-Indo-European
*reyǵ-
(derived)
←
Proto-Indo-European
*h₃reǵ-
(derived)
←
Latin
regō
(mention)
←
Latin
rigeō
(mention)