Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old High German
knappo
←
Proto-West Germanic
*knappō
(inherited)
→
German
Knappe
(inherited)
→
Mòcheno
knòpp
(inherited)