Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
rök
←
Proto-Germanic
*rakō
(inherited)
←
Old Norse
rǫk
(inherited)
→
Icelandic
rökhenda
(suffix)
→
Icelandic
rökfræði
(affix)
→
Icelandic
rökstyðja
(affix)