Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
sekr
←
Proto-Germanic
*sakjaz
(mention)
←
Proto-Indo-European
*seh₂g-
(root)
←
Old Norse
sǫk
(cognate)
→
Danish
sigte
(mention)
→
Faroese
sekur
(derived)
→
Icelandic
sekur
(derived)