Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Central Franconian
donn
←
Proto-Germanic
*dōną
(inherited)
←
Old High German
*duon
(inherited)
←
Old High German
tuon
(mention)