Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
bœr
←
Proto-Indo-European
*bʰuH-
(root)
←
Old Norse
búa
(mention)
→
Faroese
bøur
(mention)
→
Norwegian Bokmål
Bø
(derived)
→
Norwegian Nynorsk
by
(mention)
→
Norwegian Nynorsk
Bø
(derived)
→
Norwegian Nynorsk
bø
(inherited)