Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Saterland Frisian
Dau
←
German
Tau
(cognate)
←
West Frisian
dau
(cognate)
←
Proto-West Germanic
*dauw
(inherited)
←
Old Frisian
dāw
(inherited)