Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Spanish
mercadero
←
Catalan
-
(cognate)
←
Spanish
mercado
(suffix)
←
Spanish
ero
(suffix)
←
Latin
mercader
(mention)
→
Spanish
mercader
(mention)