Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Westrobothnian
ärväs
←
Proto-Germanic
*arbaidiz
(derived)
←
Westrobothnian
arbait
(mention)
←
Old Norse
erfiða
(inherited)
←
Old Norse
erfiði
(mention)
←
Old Norse
erfaði
(mention)