Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Westrobothnian
ruuk
←
Proto-Germanic
*reukaną
(inherited)
←
Westrobothnian
rauk
(mention)
←
Westrobothnian
röyk
(mention)
←
Westrobothnian
roik
(mention)
←
Old Norse
rjúka
(inherited)
→
Westrobothnian
rukar
(suffix)