Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
North Frisian
kuupe
←
West Frisian
keapje
(cognate)
←
Old Frisian
kāpia
(derived)
←
Saterland Frisian
koopje
(cognate)
→
North Frisian
ferkuupe
(affix)