Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
geswin
←
Proto-Germanic
*gaswiną
(inherited)
←
Proto-Germanic
*swiną
(mention)
←
Proto-Germanic
*swin-
(derived)