Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
ferreño
←
Galician
ferro
(suffix)
←
Galician
eño
(suffix)
←
Portuguese
ferrenho
(cognate)
→
Galician
ferreña
(mention)