Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
fast
←
Proto-Germanic
*fastuz
(inherited)
←
Proto-West Germanic
*fastī
(inherited)
→
Danish
fæstning
(derived)
→
Swedish
fästning
(derived)