Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Norwegian Nynorsk
dæ
←
Proto-Germanic
*þat
(inherited)
←
Old Norse
þat
(inherited)
←
Old Norse
þik
(inherited)
→
Norwegian Nynorsk
då
(link)