Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
West Frisian
soan
←
Proto-Germanic
*sunuz
(inherited)
←
Proto-Indo-European
*suHnús
(inherited)
←
Old Frisian
sunu
(inherited)
→
Saterland Frisian
Súun
(cognate)