Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
sela
←
Proto-Indo-European
*sed-
(derived)
←
Proto-Italic
*sedlā
(inherited)
←
Latin
sella
(inherited)
←
Old Portuguese
sela
(inherited)
→
Galician
sela
(cognate)
→
Portuguese
selar
(suffix)