Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Elfdalian
singga
←
Proto-Germanic
*singwaną
(derived)
←
Old Norse
syngva
(derived)
←
Old Norse
syngja
(mention)
←
Swedish
sjunga
(cognate)