Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Swedish
sagha
←
Proto-Germanic
*sagǭ
(inherited)
←
Old Norse
saga
(inherited)
→
Swedish
saga
(derived)
→
Swedish
såga
(inherited)