Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
quellian
←
Proto-Germanic
*kwaljaną
(inherited)
→
Old English
cwellan
(cognate)
→
Old Saxon
aquellian
(prefix)