Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
fjöllóttur
←
Icelandic
fjall
(affix)
←
Icelandic
-óttur
(affix)
←
Old Norse
fjǫllóttr
(inherited)