Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
West Frisian
swiet
←
Proto-Germanic
*swōtuz
(inherited)
←
Proto-West Germanic
*swōtī
(inherited)
←
Old Frisian
swēte
(inherited)
→
English
sweet
(cognate)