Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
æðardúnn
←
Icelandic
æður
(compound)
←
Icelandic
dúnn
(compound)
→
German
Eiderdaune
(derived)