Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Danish
uskadt
←
Danish
u-
(prefix)
←
Proto-Germanic
*skaþjaną
(derived)
←
Old Norse
óskaddr
(inherited)
←
Old Norse
skeðja
(derived)