Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
sonarsonur
←
Icelandic
sonur
(affix)
←
Icelandic
sonur
(affix)
←
Norwegian Bokmål
sønnesønn
(cognate)
←
Swedish
sonson
(cognate)