Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
fregnan
←
Proto-West Germanic
*fregnan
(inherited)
→
Old English
frignan
(cognate)
→
Westrobothnian
fräga
(derived)
→
Old Saxon
gifregnan
(prefix)