Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Frisian
wertha
←
Proto-West Germanic
*werþan
(inherited)
→
West Frisian
wurde
(inherited)
→
Saterland Frisian
wäide
(inherited)