Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
unrighteously
←
English
unrighteous
(suffix)
←
English
ly
(suffix)
←
Proto-Indo-European
*h₃reǵ-
(root)