Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
harka
←
Icelandic
harður
(mention)
←
Old Norse
harka
(derived)
←
Old Norse
harðka
(mention)
←
Old Norse
harðr
(mention)
←
Old Norse
-ka
(mention)