Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Faroese
svøvnur
←
Proto-Germanic
*swefnaz
(derived)
←
Proto-Germanic
*swefaną
(mention)
←
Proto-Indo-European
*swep-
(root)
←
Proto-Indo-European
*swépnos
(derived)
←
Old Norse
svefn
(derived)