Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
fletxa
←
Proto-Indo-European
*plewk-
(root)
←
Old Occitan
flecha
(inherited)
←
Old Catalan
flecha
(inherited)