Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Germanic
*ganhāną
→
Icelandic
gá
(inherited)
→
Old Norse
gá
(inherited)
→
Elfdalian
gą̊
(derived)