Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
atfarardómr
←
Proto-Indo-European
*per-
(root)
←
Old Norse
atfǫr
(compound)
←
Old Norse
dómr
(compound)