Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
hólf
←
Proto-Germanic
*hulfą
(derived)
←
Icelandic
hvolf
(mention)
→
Old English
hwealf
(cognate)
→
Icelandic
hanskahólf
(compound)