Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Frisian
bedd
←
Proto-Germanic
*badją
(inherited)
→
Old English
bedd
(cognate)
→
North Frisian
baad
(derived)
→
North Frisian
beed
(inherited)