Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
estragar
←
Latin
*strago
(inherited)
←
Latin
strāges
(inherited)
←
Old Portuguese
estragar
(inherited)
→
Portuguese
estrago
(back-formation)