Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
helliwiti
←
Old English
hellewite
(cognate)
←
Old Saxon
hel
(compound)
←
Old Saxon
wīti
(compound)
←
Swedish
helvete
(cognate)
→
Old Saxon
hel
(link)