Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
Sæfern
←
Proto-Celtic
*Sabrinā
(derived)
→
English
Severn
(inherited)
→
Old English
Sæfernmuþa
(compound)