Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
krókur
←
Proto-Germanic
*krōkaz
(inherited)
←
Old Norse
krókr
(inherited)
→
English
crook
(cognate)
→
Icelandic
Sauðárkrókur
(affix)