Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Elfdalian
so
←
Proto-Germanic
*swa
(derived)
←
Proto-Germanic
*swē
(mention)
←
Old Norse
svá
(derived)
←
Swedish
så
(cognate)