Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
riera
←
Proto-Indo-European
*h₃reyH-
(mention)
←
Latin
rīvus
(mention)
→
Catalan
rierol
(suffix)