Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
skjór
→
Westrobothnian
skir
(inherited)
→
Icelandic
skjór
(inherited)
→
Norwegian Bokmål
skjære
(derived)
→
Norwegian Nynorsk
skjor
(derived)