Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
héðinn
←
Proto-Germanic
*hidana-
(derived)
←
Proto-Germanic
*hidanaz
(mention)
→
Old English
heden
(cognate)
→
Old Norse
úlfhéðinn
(mention)