Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
eanian
←
Proto-Germanic
*aunōną
(inherited)
←
Proto-West Germanic
*aunōn
(inherited)
←
Dutch
onen
(cognate)
←
Swedish
öna
(cognate)