Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
-ó
←
Spanish
-uelo
(cognate)
←
Latin
-olus
(inherited)
←
Latin
-lus
(mention)
←
Old Portuguese
-oo
(inherited)
→
Galician
bulló
(affix)
→
Galician
arreitó
(affix)
→
Galician
longueirón
(affix)