Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
loitador
←
Spanish
luchador
(cognate)
←
Galician
loita
(affix)
←
Galician
-dor
(affix)
←
Latin
luctator
(inherited)
←
Portuguese
luitador
(cognate)