Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
lund
→
Icelandic
lundir
(mention)
→
Icelandic
ólund
(affix)
→
Swedish
lynne
(cognate)