Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Elfdalian
fisk
←
Proto-Germanic
*fiskaz
(inherited)
←
Proto-Indo-European
*peysḱ-
(inherited)
←
Old Norse
fiskr
(inherited)
←
Swedish
fisk
(cognate)