Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
sía
←
Proto-Germanic
*sīhwaną
(inherited)
←
Proto-Germanic
*sīhwǭ
(derived)
←
Old Norse
sía
(inherited)