Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
German
rostfrei
←
German
Rost
(compound)
←
German
frei
(compound)
←
Proto-Indo-European
*h₁rewdʰ-
(root)