Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
bjalki
→
Norwegian Bokmål
bjelke
(derived)
→
Norwegian Nynorsk
bjelke
(derived)
→
Swedish
bjälke
(derived)