Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
hjú
←
Proto-Germanic
*hīwōn-
(inherited)
←
Proto-Germanic
*hīwą
(mention)
←
Old Norse
hjú
(inherited)
←
Old Norse
hjó
(mention)
→
Icelandic
hýr
(cognate)
→
Icelandic
skötuhjú
(compound)