Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Frisian
berch
→
North Frisian
berig
(derived)
→
North Frisian
bärj
(derived)
→
West Frisian
berch
(inherited)
→
Saterland Frisian
Bierich
(derived)