Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Central Franconian
Baam
←
Proto-Germanic
*baumaz
(inherited)
←
Proto-West Germanic
*baum
(inherited)
←
Old High German
boum
(inherited)