Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
ciclo
←
Ancient Greek
κύκλος
(derived)
←
Proto-Indo-European
*kʷel-
(root)
←
Proto-Indo-European
*kʷékʷlos
(derived)