Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Westrobothnian
knapp
←
Proto-Germanic
*knappô
(derived)
←
Proto-Germanic
*knappa-
(mention)
←
Proto-West Germanic
*knappō
(mention)
←
Old Norse
knappr
(inherited)