Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Portuguese
mar
←
Proto-Indo-European
*móri
(inherited)
←
Latin
mare
(inherited)
→
Galician
mar
(inherited)
→
Portuguese
mar
(inherited)