Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
West Frisian
soargje
←
West Frisian
soarch
(affix)
←
West Frisian
-je
(affix)
→
West Frisian
fersoargje
(affix)
→
Saterland Frisian
súurgje
(cognate)