Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
óðinsdagur
←
Old Norse
óðinsdagr
(derived)
←
Old Norse
Óðinn
(mention)
←
Old Norse
dagr
(mention)