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