Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Dutch
ōk
→
Afrikaans
ook
(inherited)
→
Old English
eac
(cognate)
→
Middle Dutch
ooc
(inherited)
→
Dutch
ook
(inherited)
→
Old Frisian
ak
(cognate)
→
West Flemish
wok
(inherited)