Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
skulda
→
Faroese
skylda
(cognate)
→
Icelandic
skuldari
(affix)
→
Icelandic
skuldunautur
(affix)