Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
síð
←
Proto-Germanic
*sīþuz
(inherited)
→
Westrobothnian
sell
(mention)
→
Icelandic
síð
(derived)