Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Westrobothnian
haḷv
←
Proto-Germanic
*halbaz
(inherited)
←
Old Norse
halfr
(inherited)
→
Westrobothnian
haḷvtriri
(compound)