Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
wolkan
←
Proto-Germanic
*wulkną
(inherited)
←
Proto-Germanic
*wulkō
(mention)
←
Proto-Germanic
*wulkô
(mention)