Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
mercado
←
Galician
mercar
(link)
←
Latin
mercātus
(inherited)
←
Old Portuguese
mercado
(inherited)
→
Galician
mercadotecnia
(suffix)