Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
apurar
←
Portuguese
a-
(affix)
←
Portuguese
puro
(affix)
←
Portuguese
-ar
(affix)
→
Kabuverdianu
apura
(derived)
→
Kabuverdianu
apurá
(derived)
→
Portuguese
apuro
(back-formation)