Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Dutch
vijftig
←
Middle Dutch
vijftich
(inherited)
←
Proto-Germanic
*fimf tigiwiz
(inherited)
←
Old Dutch
*fīftig
(inherited)
→
Afrikaans
vyftig
(inherited)
→
Dutch
achtenvijftig
(compound)
→
Pennsylvania German
fuffzich
(cognate)