Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Frisian
melka
←
Proto-Germanic
*melkaną
(inherited)
→
Old English
meolcan
(cognate)
→
North Frisian
molke
(inherited)
→
West Frisian
melke
(inherited)