Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Hunsrik
Sommer
←
Proto-Germanic
*sumaraz
(inherited)
←
Middle High German
sumer
(inherited)
←
Old High German
sumar
(inherited)