Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Norwegian Nynorsk
hovud-
→
Norwegian Nynorsk
hovudstad
(compound)
→
Norwegian Nynorsk
hovudrett
(prefix)
→
Swedish
huvud-
(cognate)