Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
skilnaðr
→
Westrobothnian
skelnä
(inherited)
→
Icelandic
skilnaður
(inherited)
→
Norwegian Nynorsk
skilnad
(derived)
→
Swedish
skillnad
(inherited)