Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
bihwelvian
←
Old Saxon
bi
(prefix)
←
Old Saxon
hwelvian
(prefix)
→
English
whelm
(cognate)
→
Swedish
välva
(cognate)