Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
North Frisian
saalt
←
West Frisian
sâlt
(cognate)
←
Proto-Germanic
*saltą
(derived)
←
Old Frisian
salt
(mention)