Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
karmur
←
Proto-Germanic
*karmaz
(inherited)
←
Old Norse
karmr
(inherited)
→
Icelandic
gluggakarmur
(affix)