Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Westrobothnian
aigg
←
Proto-Germanic
*ajją
(inherited)
←
Proto-Germanic
*agjō
(inherited)
←
Westrobothnian
äiggbröst
(link)
←
Old Norse
egg
(inherited)
←
Old Norse
egg
(inherited)
←
Swedish
ägg
(cognate)