Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
aramio
←
Irish
ar
(cognate)
←
Proto-Indo-European
*h₂erh₃-
(root)
←
Proto-Indo-European
*h₂erh₃-
(derived)