Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
sjór
←
Old Norse
sær
(mention)
→
Westrobothnian
ʃø
(inherited)
→
Jutish
skå
(derived)
→
Norwegian Bokmål
sjø
(derived)
→
Norwegian Nynorsk
sjø
(derived)
→
Old Norse
sær
(link)