Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
costeiro
←
Spanish
costanero
(cognate)
←
Galician
costeira
(link)
←
Galician
costa
(suffix)
←
Galician
eiro
(suffix)
←
Galician
costeira
(link)
←
Latin
costa
(derived)
←
Undetermined
*costanario
(mention)