Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
slapan
←
Proto-West Germanic
*slāpan
(inherited)
→
Low German
slapen
(inherited)
→
Old Saxon
gislapo
(confix)