Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
skaði
←
Proto-Germanic
*skaþô
(inherited)
←
Proto-Indo-European
*(s)keh₁t-
(derived)
←
Old Norse
skaði
(inherited)
→
Icelandic
skaðlegur
(suffix)
→
Luxembourgish
Schued
(cognate)