Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
arquer
←
Catalan
arc
(suffix)
←
Catalan
er
(suffix)
←
Latin
arcuārius
(mention)
←
Latin
arcus
(inherited)
←
Old Occitan
arquier
(inherited)