Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
frade
←
Proto-Indo-European
*bʰréh₂tēr
(inherited)
←
Proto-Italic
*frātēr
(inherited)
←
Latin
frater
(inherited)
←
Old Portuguese
frade
(inherited)
→
Portuguese
confrade
(prefix)
→
Portuguese
bróder
(doublet)