Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
Tavastia
←
Old Norse
Tafæistaland
(derived)
←
Old Norse
Tafæistr
(mention)
←
Old Norse
land
(mention)
←
Old Norse
tafʀ
(mention)
←
Old Norse
Æistʀ
(mention)
→
English
Tavastian
(suffix)