Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
West Frisian
koel
←
Proto-West Germanic
*kōl(ī)
(inherited)
←
Old Frisian
*kōl
(inherited)
→
English
cool
(cognate)