Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
acontecer
←
Latin
contingō
(inherited)
←
Old Portuguese
acontecer
(inherited)
←
Old Portuguese
a-
(mention)
←
Old Portuguese
contecer
(mention)
→
Portuguese
acontecimento
(suffix)