Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Frisian
self
→
West Frisian
sels
(inherited)
→
Old Norse
sjalfr
(cognate)
→
Saterland Frisian
säärm
(inherited)