Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
gengur
←
Proto-Germanic
*gangiz
(derived)
←
Proto-Indo-European
*ǵʰengʰ-
(root)
←
Old Norse
gengr
(derived)
→
Icelandic
skipgengur
(compound)
→
Swedish
gäng
(cognate)