Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Danish
om-
←
Old Norse
um
(inherited)
→
Danish
omgang
(affix)
→
Danish
omfortolke
(affix)
→
Danish
ombestemme
(affix)