Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
North Frisian
ferjeese
←
Proto-West Germanic
*fragetan
(derived)
←
Old Frisian
forieta
(derived)
→
North Frisian
ferjid
(mention)