Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
höggormur
←
Old Norse
höggormr
(derived)
←
Old Norse
högg
(mention)
←
Old Norse
ormr
(mention)
←
Swedish
huggorm
(cognate)
→
Faroese
høggormur
(cognate)
→
Swedish
huggorm
(cognate)