Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
kös
←
Icelandic
gero
(mention)
←
Latin
agger
(mention)
←
Latin
congeriēs
(mention)
←
Norwegian Nynorsk
kos
(mention)
←
Norwegian Nynorsk
kas
(mention)
←
Old Norse
kös
(derived)
←
Swedish
kas
(mention)
→
Icelandic
kasóléttur
(mention)
→
Icelandic
kas-
(mention)
→
Icelandic
kasheitur
(compound)