Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Frisian
ūs
→
Old English
us
(cognate)
→
North Frisian
üs
(inherited)
→
West Frisian
ús
(inherited)
→
Saterland Frisian
uus
(inherited)