Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Westrobothnian
skjȯrs
←
Norwegian
sjøls
(cognate)
←
Old Norse
sjalfs
(inherited)
←
Old Norse
sjalfr
(mention)