Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Norwegian Nynorsk
skòr
←
Proto-Indo-European
*(s)ker-
(root)
←
Norwegian Nynorsk
skår
(doublet)
←
Old Norse
skor
(inherited)
→
Norwegian Nynorsk
score
(doublet)