Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
helpan
←
Proto-Germanic
*helpaną
(inherited)
←
Proto-West Germanic
*helpan
(inherited)
→
English
help
(inherited)
→
English
holp
(mention)
→
English
holpen
(mention)
→
Middle English
helpen
(inherited)
→
Esperanto
helpi
(mention)
→
Old Norse
hjalpa
(cognate)