Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
einvaldur
←
Icelandic
ein
(prefix)
←
Icelandic
vald
(prefix)
→
Swedish
envåldshärskare
(cognate)