Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Picard
iau
←
French
eau
(cognate)
←
Old French
iaue
(inherited)
←
Proto-Indo-European
*h₂ekʷeh₂
(inherited)
←
Latin
aqua
(inherited)
→
Old French
iaue
(cognate)