Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
acidente
←
Proto-Indo-European
*ád
(derived)
←
Proto-Indo-European
*ḱad-
(mention)
←
Latin
accidēns
(derived)
←
Latin
accidō
(mention)
←
Latin
ad
(mention)
←
Latin
cadō
(mention)