Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
protestar
←
Latin
prōtestārī
(mention)
←
Latin
prōtestor
(mention)
←
Latin
prō
(mention)
←
Latin
testor
(mention)
←
Latin
testis
(mention)
→
Portuguese
atestar
(link)
→
Portuguese
testar
(link)
→
Portuguese
protesto
(back-formation)