Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old High German
helfan
←
Proto-Germanic
*helpaną
(inherited)
←
Proto-West Germanic
*helpan
(inherited)
→
German
helfen
(inherited)
→
Middle High German
helfen
(inherited)
→
Central Franconian
hellepe
(mention)
→
Luxembourgish
hëllefen
(inherited)
→
Old Norse
hjalpa
(cognate)
→
Yiddish
העלפֿן
(inherited)