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