Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
remuíño
←
Spanish
remolino
(cognate)
←
Galician
re
(prefix)
←
Galician
muíño
(prefix)
←
Portuguese
remoinho
(cognate)