Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
köfnunarefni
←
Danish
kvælstof
(cognate)
←
Icelandic
köfnun
(compound)
←
Icelandic
efni
(compound)