Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
fons
←
Proto-Indo-European
*bʰudʰmḗn
(inherited)
←
Latin
fundus
(inherited)
→
Catalan
enfonsar
(affix)
→
Catalan
rerefons
(prefix)