Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Danish
byforny
←
Danish
byfornyelse
(back-formation)
←
Danish
by
(compound)
←
Danish
forny
(compound)
←
English
surface etymology
(link)