Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Norwegian Nynorsk
tått
←
Norwegian Nynorsk
tott
(doublet)
←
Old Norse
þáttr
(derived)
→
Norwegian Nynorsk
tott
(doublet)