Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Swedish
nyckelroman
←
German
Schlüsselroman
(cognate)
←
French
roman à clef
(cognate)
←
Swedish
nyckel
(compound)
←
Swedish
roman
(compound)