Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
casamento
←
Spanish
casamiento
(cognate)
←
Galician
casar
(suffix)
←
Galician
mento
(suffix)
←
Portuguese
casamento
(cognate)
←
Old Portuguese
casamento
(inherited)