Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Westrobothnian
siig
←
Proto-Germanic
*sīganą
(inherited)
←
Old Norse
síga
(inherited)
→
Westrobothnian
seig
(mention)
→
Westrobothnian
singän
(mention)
→
Westrobothnian
singän
(link)