Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
gerwian
←
Proto-Germanic
*garwijaną
(inherited)
→
Old English
gearwian
(mention)
→
Old Saxon
gigerwian
(prefix)