Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
côtoyer
←
French
côte
(mention)
←
French
-oyer
(affix)
←
Old French
costoier
(inherited)
→
English
coaster
(cognate)
→
English
coast
(cognate)